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热门问题

等级	主题	问题	格式化的问题
9701	求出长、宽或高	[[1,-4,5],[7,0,-2]]	$[\begin{array}{c} 1 & - 4 & 5 \\ 7 & 0 & - 2 \end{array}]$
9702	求出长、宽或高	[[1,-5,4,1],[3,-4,2,-1]]	$[\begin{array}{c} 1 & - 5 & 4 & 1 \\ 3 & - 4 & 2 & - 1 \end{array}]$
9703	求出长、宽或高	[[1],[14]]	$[\begin{array}{c} 1 \\ 14 \end{array}]$
9704	求出长、宽或高	[[13,-20],[4,0],[-4,7],[47,20]]	$[\begin{array}{c} 13 & - 20 \\ 4 & 0 \\ - 4 & 7 \\ 47 & 20 \end{array}]$
9705	求出长、宽或高	[[-18,6,38],[9,-9,22]]	$[\begin{array}{c} - 18 & 6 & 38 \\ 9 & - 9 & 22 \end{array}]$
9706	求出长、宽或高	[[1bc,a(b+c)],[1ca,b(c+a)],[1ab,c(a+b)]]	$[\begin{array}{c} 1 b c & a (b + c) \\ 1 c a & b (c + a) \\ 1 a b & c (a + b) \end{array}]$
9707	求出长、宽或高	[[2,87],[5,68],[8,53],[12,37]]	$[\begin{array}{c} 2 & 87 \\ 5 & 68 \\ 8 & 53 \\ 12 & 37 \end{array}]$
9708	求出长、宽或高	[[-2,9],[1,-9],[2,-7]]	$[\begin{array}{c} - 2 & 9 \\ 1 & - 9 \\ 2 & - 7 \end{array}]$
9709	求出长、宽或高	[[3,5,6,9],[2,4,7,9],[6,4,7,1]]	$[\begin{array}{c} 3 & 5 & 6 & 9 \\ 2 & 4 & 7 & 9 \\ 6 & 4 & 7 & 1 \end{array}]$
9710	求出长、宽或高	[[3,5],[8,6],[9,3]]	$[\begin{array}{c} 3 & 5 \\ 8 & 6 \\ 9 & 3 \end{array}]$
9711	求出长、宽或高	[[4,3,2,1],[0,1,2,3],[6,7,8,9],[4,5,6,1]]	$[\begin{array}{c} 4 & 3 & 2 & 1 \\ 0 & 1 & 2 & 3 \\ 6 & 7 & 8 & 9 \\ 4 & 5 & 6 & 1 \end{array}]$
9712	求出长、宽或高	[[0.75,0.15,0.10],[0.25,0.65,0.10],[0.10,0.20,0.70]]	$[\begin{array}{c} 0.75 & 0.15 & 0.1 \\ 0.25 & 0.65 & 0.1 \\ 0.1 & 0.2 & 0.7 \end{array}]$
9713	求出长、宽或高	[[0,0.75,0,0.25],[0.90,0,0.10,0]]	$[\begin{array}{c} 0 & 0.75 & 0 & 0.25 \\ 0.9 & 0 & 0.1 & 0 \end{array}]$
9714	求出长、宽或高	[[0,0,3,-9,6],[5,15,-10,40,-45],[1,3,-1,5,-7]]	$[\begin{array}{c} 0 & 0 & 3 & - 9 & 6 \\ 5 & 15 & - 10 & 40 & - 45 \\ 1 & 3 & - 1 & 5 & - 7 \end{array}]$
9715	求出长、宽或高	[[0,1,0,3,2,1,0,2],[1,1,1,0,2,0,4,1],[2,0,0,1,0,2,1,3],[1,3,0,0,1,0,5,4]]	$[\begin{array}{c} 0 & 1 & 0 & 3 & 2 & 1 & 0 & 2 \\ 1 & 1 & 1 & 0 & 2 & 0 & 4 & 1 \\ 2 & 0 & 0 & 1 & 0 & 2 & 1 & 3 \\ 1 & 3 & 0 & 0 & 1 & 0 & 5 & 4 \end{array}]$
9716	求出长、宽或高	[[0.25,0.09],[0.31,0.12]]	$[\begin{array}{c} 0.25 & 0.09 \\ 0.31 & 0.12 \end{array}]$
9717	求出长、宽或高	[[0.8,0.2,2],[0.2,0.7,3]]	$[\begin{array}{c} 0.8 & 0.2 & 2 \\ 0.2 & 0.7 & 3 \end{array}]$
9718	求出长、宽或高	[[1,0,0,1],[0,0,1,-1],[0,0,0,0]]	$[\begin{array}{c} 1 & 0 & 0 & 1 \\ 0 & 0 & 1 & - 1 \\ 0 & 0 & 0 & 0 \end{array}]$
9719	求出长、宽或高	[[1,0,0,-3],[0,1,0,-2],[0,0,1,-4]]	$[\begin{array}{c} 1 & 0 & 0 & - 3 \\ 0 & 1 & 0 & - 2 \\ 0 & 0 & 1 & - 4 \end{array}]$
9720	求出长、宽或高	[[1,0,3,\|-9\|],[0,1,2,\|9\|],[0,0,0,\|0\|]]	$[\begin{array}{c} 1 & 0 & 3 & \| - 9 \| \\ 0 & 1 & 2 & \| 9 \| \\ 0 & 0 & 0 & \| 0 \| \end{array}]$
9721	求出长、宽或高	[[1,0,-3],[0,1,6]]	$[\begin{array}{c} 1 & 0 & - 3 \\ 0 & 1 & 6 \end{array}]$
9722	求出长、宽或高	[[1,0,5],[0,1,3]]	$[\begin{array}{c} 1 & 0 & 5 \\ 0 & 1 & 3 \end{array}]$
9723	求出长、宽或高	[[1,1,1,1,0,0,11],[1,1,0,0,1,0,45],[-2,-1,-1,0,0,1,0]]	$[\begin{array}{c} 1 & 1 & 1 & 1 & 0 & 0 & 11 \\ 1 & 1 & 0 & 0 & 1 & 0 & 45 \\ - 2 & - 1 & - 1 & 0 & 0 & 1 & 0 \end{array}]$
9724	求出长、宽或高	[[1,2,3,4,5],[2,3,4,5,1],[3,4,5,1,2],[4,5,1,2,3],[5,1,2,3,4]]	$[\begin{array}{c} 1 & 2 & 3 & 4 & 5 \\ 2 & 3 & 4 & 5 & 1 \\ 3 & 4 & 5 & 1 & 2 \\ 4 & 5 & 1 & 2 & 3 \\ 5 & 1 & 2 & 3 & 4 \end{array}]$
9725	求出长、宽或高	[[1,-2,3],[0,3,-2]]=a	$[\begin{array}{c} 1 & - 2 & 3 \\ 0 & 3 & - 2 \end{array}] = a$
9726	求出长、宽或高	[[1,2,4,1,0,0,8],[2,10,1,0,1,0,10],[-5,-50,1,0,0,1,0]]	$[\begin{array}{c} 1 & 2 & 4 & 1 & 0 & 0 & 8 \\ 2 & 10 & 1 & 0 & 1 & 0 & 10 \\ - 5 & - 50 & 1 & 0 & 0 & 1 & 0 \end{array}]$
9727	求出长、宽或高	[[1,2,5,5],[3,4,6,7]]	$[\begin{array}{c} 1 & 2 & 5 & 5 \\ 3 & 4 & 6 & 7 \end{array}]$
9728	求出中点值（中极限值）	142 , 137 , 143 , 128 , 128 , 142 , 128 , 118 , 144 , 151 , 128 , 124 , 118 , 134	$142$ , $137$ , $143$ , $128$ , $128$ , $142$ , $128$ , $118$ , $144$ , $151$ , $128$ , $124$ , $118$ , $134$
9729	求出中点值（中极限值）	28 , 25 , 31 , 22 , 28 , 31 , 24	$28$ , $25$ , $31$ , $22$ , $28$ , $31$ , $24$
9730	求出中点值（中极限值）	28000 , 26000 , 32000 , 30000 , 30000 , 79000 , 25000 , 27000 , 90000 , 29000	$28000$ , $26000$ , $32000$ , $30000$ , $30000$ , $79000$ , $25000$ , $27000$ , $90000$ , $29000$
9731	求出中点值（中极限值）	3 , 5 , 8 , 5 , 7 , 8	$3$ , $5$ , $8$ , $5$ , $7$ , $8$
9732	求出中点值（中极限值）	3 , 5 , 7 , 9 , 11 , 13 , 15 , 17	$3$ , $5$ , $7$ , $9$ , $11$ , $13$ , $15$ , $17$
9733	求出中点值（中极限值）	3 , 5 , 9 , 15 , 23 , 33	$3$ , $5$ , $9$ , $15$ , $23$ , $33$
9734	求出中点值（中极限值）	31 , 28 , 27 , 26 , 32 , 29 , 25 , 27	$31$ , $28$ , $27$ , $26$ , $32$ , $29$ , $25$ , $27$
9735	求出中点值（中极限值）	4 , 2 , 4 , 2 , 2 , 1 , 2 , 1 , 4 , 2 , 2 , 1 , 3 , 1	$4$ , $2$ , $4$ , $2$ , $2$ , $1$ , $2$ , $1$ , $4$ , $2$ , $2$ , $1$ , $3$ , $1$
9736	求出中点值（中极限值）	534 , 524 , 539 , 530 , 537 , 522	$534$ , $524$ , $539$ , $530$ , $537$ , $522$
9737	求出中点值（中极限值）	58 , 51 , 38 , 49 , 59 , 46 , 62	$58$ , $51$ , $38$ , $49$ , $59$ , $46$ , $62$
9738	求出中点值（中极限值）	62 , 62 , 62 , 62 , 63 , 64 , 68	$62$ , $62$ , $62$ , $62$ , $63$ , $64$ , $68$
9739	求出中点值（中极限值）	7 , 7 , 9 , 9 , 9 , 11 , 11	$7$ , $7$ , $9$ , $9$ , $9$ , $11$ , $11$
9740	求出中点值（中极限值）	70 , 93 , 230 , 190 , 162 , 263 , 194 , 381 , 256 , 230 , 382 , 326 , 219 , 242 , 0	$70$ , $93$ , $230$ , $190$ , $162$ , $263$ , $194$ , $381$ , $256$ , $230$ , $382$ , $326$ , $219$ , $242$ , $0$
9741	求出中点值（中极限值）	74 , 77	$74$ , $77$
9742	求出中点值（中极限值）	750 , 3400 , 1962 , 700 , 203 , 1479 , 5905 , 9239 , 1131 , 2516	$750$ , $3400$ , $1962$ , $700$ , $203$ , $1479$ , $5905$ , $9239$ , $1131$ , $2516$
9743	求出中点值（中极限值）	8 , -16 , 32 , -64 , 128	$8$ , $- 16$ , $32$ , $- 64$ , $128$
9744	求出中点值（中极限值）	8 , 9 , 10 , 11 , 12	$8$ , $9$ , $10$ , $11$ , $12$
9745	求出中点值（中极限值）	82 , 83 , 84 , 88 , 87 , 83	$82$ , $83$ , $84$ , $88$ , $87$ , $83$
9746	求出中点值（中极限值）	98 , 98 , 94 , 60 , 75 , 98	$98$ , $98$ , $94$ , $60$ , $75$ , $98$
9747	n के लिये हल कीजिये	an=12-3n
9748	y के लिये हल कीजिये	12x-11y<=18	$12 x - 11 y \leq 18$
9749	求出中轴数	0 , 3 , 2 , 5 , 1 , 4 , 7 , 9	$0$ , $3$ , $2$ , $5$ , $1$ , $4$ , $7$ , $9$
9750	求出中轴数	1 , 2 , 3 , 4 , 5	$1$ , $2$ , $3$ , $4$ , $5$
9751	求出中轴数	137 , 139 , 141	$137$ , $139$ , $141$
9752	求出中轴数	24 , 90	$24$ , $90$
9753	求出中轴数	38 , 37 , 35 , 29 , 21 , 18 , 16 , 12 , 11.8 , 11.2	$38$ , $37$ , $35$ , $29$ , $21$ , $18$ , $16$ , $12$ , $11.8$ , $11.2$
9754	求出长、宽或高	[[5,4],[-4,2]]^2	${[\begin{array}{c} 5 & 4 \\ - 4 & 2 \end{array}]}^{2}$
9755	求出长、宽或高	a*10[[46,5,6,77],[77,90,62,34],[58,76,43,37],[98,76,54,3434]]	$a \cdot 10 [\begin{array}{c} 46 & 5 & 6 & 77 \\ 77 & 90 & 62 & 34 \\ 58 & 76 & 43 & 37 \\ 98 & 76 & 54 & 3434 \end{array}]$
9756	求出长、宽或高	b=[[-1,2,5,0],[-5,9,0,7],[9,12,8,-1],[8,-5,0,6]]	$b = [\begin{array}{c} - 1 & 2 & 5 & 0 \\ - 5 & 9 & 0 & 7 \\ 9 & 12 & 8 & - 1 \\ 8 & - 5 & 0 & 6 \end{array}]$
9757	求出长、宽或高	B=[[1,7,-8],[6,4,0],[1,5,4]]	$B = [\begin{array}{c} 1 & 7 & - 8 \\ 6 & 4 & 0 \\ 1 & 5 & 4 \end{array}]$
9758	求出长、宽或高	b=[[50,10],[25,15]]	$b = [\begin{array}{c} 50 & 10 \\ 25 & 15 \end{array}]$
9759	描述分布的两项属性	table[[x,P(x)],[2,0.5],[3,0.5],[4,0.7],[1,0.8]]	$\begin{array}{c} x & P (x) \\ 2 & 0.5 \\ 3 & 0.5 \\ 4 & 0.7 \\ 1 & 0.8 \end{array}$
9760	描述分布的两项属性	table[[x,P(x)],[0,0.2],[1,0.4],[2,0.3],[3,0.1]]	$\begin{array}{c} x & P (x) \\ 0 & 0.2 \\ 1 & 0.4 \\ 2 & 0.3 \\ 3 & 0.1 \end{array}$
9761	描述分布的两项属性	table[[x,P(x)],[3,6],[2,5],[3,3]]	$\begin{array}{c} x & P (x) \\ 3 & 6 \\ 2 & 5 \\ 3 & 3 \end{array}$
9762	描述分布的两项属性	table[[x,P(x)],[30000,3],[60000,6],[90000,9],[120000,12],[150000,15]]	$\begin{array}{c} x & P (x) \\ 30000 & 3 \\ 60000 & 6 \\ 90000 & 9 \\ 120000 & 12 \\ 150000 & 15 \end{array}$
9763	描述分布的两项属性	table[[x,P(x)],[-5,0.1],[-1,0.1],[0,0.2],[2,0.3],[5,0.3],[10,0]]	$\begin{array}{c} x & P (x) \\ - 5 & 0.1 \\ - 1 & 0.1 \\ 0 & 0.2 \\ 2 & 0.3 \\ 5 & 0.3 \\ 10 & 0 \end{array}$
9764	描述分布的两项属性	table[[x,P(x)],[5,2],[3,4],[6,5]]	$\begin{array}{c} x & P (x) \\ 5 & 2 \\ 3 & 4 \\ 6 & 5 \end{array}$
9765	描述分布的两项属性	table[[x,P(x)],[-5,x^(5/3)-5x^(2/3)]]	$\begin{array}{c} x & P (x) \\ - 5 & x^{\frac{5}{3}} - 5 x^{\frac{2}{3}} \end{array}$
9766	描述分布的两项属性	table[[x,P(x)],[7,0],[8,1],[6,1],[15,2],[-1,-2]]	$\begin{array}{c} x & P (x) \\ 7 & 0 \\ 8 & 1 \\ 6 & 1 \\ 15 & 2 \\ - 1 & - 2 \end{array}$
9767	描述分布的两项属性	table[[x,P(x)],[-8,-12],[-1,2],[4,12],[6,16]]	$\begin{array}{c} x & P (x) \\ - 8 & - 12 \\ - 1 & 2 \\ 4 & 12 \\ 6 & 16 \end{array}$
9768	描述分布的两项属性	table[[x,P(x)],[0,0.23],[1,0.38],[2,0.22],[3,0.13],[4,0.03],[5,0.01],[6,0.00]]	$\begin{array}{c} x & P (x) \\ 0 & 0.23 \\ 1 & 0.38 \\ 2 & 0.22 \\ 3 & 0.13 \\ 4 & 0.03 \\ 5 & 0.01 \\ 6 & 0 \end{array}$
9769	求出四分位距（H-分差）	0 , 3 , 1 , 4 , 2 , 6 , 5 , 9	$0$ , $3$ , $1$ , $4$ , $2$ , $6$ , $5$ , $9$
9770	求出四分位距（H-分差）	0 , 8 , 4 , 6 , 7 , 3 , 7	$0$ , $8$ , $4$ , $6$ , $7$ , $3$ , $7$
9771	求出四分位距（H-分差）	13 , 14 , 18 , 13 , 12 , 17 , 15 , 12 , 13 , 19 , 11 , 14 , 14 , 18 , 22 , 23	$13$ , $14$ , $18$ , $13$ , $12$ , $17$ , $15$ , $12$ , $13$ , $19$ , $11$ , $14$ , $14$ , $18$ , $22$ , $23$
9772	求出四分位距（H-分差）	14 , 8 , 8 , 13 , 12	$14$ , $8$ , $8$ , $13$ , $12$
9773	求出四分位距（H-分差）	20 , 19 , 20 , 7 , 11 , 17 , 16	$20$ , $19$ , $20$ , $7$ , $11$ , $17$ , $16$
9774	求出四分位距（H-分差）	29 , 40 , 12 , 22 , 8 , 21 , 48 , 40 , 22 , 4 , 41 , 35 , 21 , 15 , 47	$29$ , $40$ , $12$ , $22$ , $8$ , $21$ , $48$ , $40$ , $22$ , $4$ , $41$ , $35$ , $21$ , $15$ , $47$
9775	求出四分位距（H-分差）	5 , 24 , 20 , 18 , 21 , 11	$5$ , $24$ , $20$ , $18$ , $21$ , $11$
9776	求出四分位距（H-分差）	83 , 73 , 92 , 89 , 71 , 81 , 51 , 66 , 60 , 65 , 87 , 49	$83$ , $73$ , $92$ , $89$ , $71$ , $81$ , $51$ , $66$ , $60$ , $65$ , $87$ , $49$
9777	求出中点值（中极限值）	1.1 , 2.2 , 1.5 , 2.6 , 1.1 , 2.2 , 1.1 , 9.2 , 9.2 , 1.8	$1.1$ , $2.2$ , $1.5$ , $2.6$ , $1.1$ , $2.2$ , $1.1$ , $9.2$ , $9.2$ , $1.8$
9778	求出中点值（中极限值）	1.3 , 2.2 , 1.7 , 3 , 1.3 , 2.2 , 1.3 , 9.2 , 9.2 , 2	$1.3$ , $2.2$ , $1.7$ , $3$ , $1.3$ , $2.2$ , $1.3$ , $9.2$ , $9.2$ , $2$
9779	求出中点值（中极限值）	1.7 , 5.6 , 7.3 , 3.6 , 5.6 , 5.6 , 3.8 , 7.1 , 3.9 , 2.3 , 2.3	$1.7$ , $5.6$ , $7.3$ , $3.6$ , $5.6$ , $5.6$ , $3.8$ , $7.1$ , $3.9$ , $2.3$ , $2.3$
9780	द्विपद बंटन की प्रायिकता P(x>=42) ज्ञात कीजिये	n=95 , p=0.49 , x=42	$n = 95$ , $p = 0.49$ , $x = 42$
9781	द्विपद बंटन की प्रायिकता P(x>0) ज्ञात कीजिये	x>0 , n=12 , p=0.30	$x > 0$ , $n = 12$ , $p = 0.3$
9782	द्विपद बंटन की प्रायिकता P(x>0) ज्ञात कीजिये	x>0 , n=12 , p=0.70	$x > 0$ , $n = 12$ , $p = 0.7$
9783	द्विपद बंटन की प्रायिकता P(x>1) ज्ञात कीजिये	x>1 , n=12 , p=0.70	$x > 1$ , $n = 12$ , $p = 0.7$
9784	द्विपद बंटन की प्रायिकता P(x>2) ज्ञात कीजिये	x>2 , n=3 , p=0.9	$x > 2$ , $n = 3$ , $p = 0.9$
9785	द्विपद बंटन की प्रायिकता P(x>3) ज्ञात कीजिये	x>3 , n=5 , p=0.5	$x > 3$ , $n = 5$ , $p = 0.5$
9786	描述分布的两项属性	table[[x,P(x)],[0,8.6],[1,9.9],[2,11.4],[3,12.8],[4,14.3],[5,14.7],[6,16.1],[7,18.2]]	$\begin{array}{c} x & P (x) \\ 0 & 8.6 \\ 1 & 9.9 \\ 2 & 11.4 \\ 3 & 12.8 \\ 4 & 14.3 \\ 5 & 14.7 \\ 6 & 16.1 \\ 7 & 18.2 \end{array}$
9787	描述分布的两项属性	table[[x,P(x)],[0,0.643],[1,0.224],[2,0.088],[3,0.023],[4,0.014],[5,0.009]]	$\begin{array}{c} x & P (x) \\ 0 & 0.643 \\ 1 & 0.224 \\ 2 & 0.088 \\ 3 & 0.023 \\ 4 & 0.014 \\ 5 & 0.009 \end{array}$
9788	描述分布的两项属性	table[[x,P(x)],[1,8],[2,13],[3,18],[10,x],[100,x]]	$\begin{array}{c} x & P (x) \\ 1 & 8 \\ 2 & 13 \\ 3 & 18 \\ 10 & x \\ 100 & x \end{array}$
9789	描述分布的两项属性	table[[x,P(x)],[1,-9],[2,-10],[3,-7],[4,0],[5,11],[6,26]]	$\begin{array}{c} x & P (x) \\ 1 & - 9 \\ 2 & - 10 \\ 3 & - 7 \\ 4 & 0 \\ 5 & 11 \\ 6 & 26 \end{array}$
9790	描述分布的两项属性	table[[x,P(x)],[1,1],[2,5],[3,9],[4,22],[5,55]]	$\begin{array}{c} x & P (x) \\ 1 & 1 \\ 2 & 5 \\ 3 & 9 \\ 4 & 22 \\ 5 & 55 \end{array}$
9791	描述分布的两项属性	table[[x,P(x)],[1,-13],[2,-31],[3,-59],[4,-97],[5,-146]]	$\begin{array}{c} x & P (x) \\ 1 & - 13 \\ 2 & - 31 \\ 3 & - 59 \\ 4 & - 97 \\ 5 & - 146 \end{array}$
9792	描述分布的两项属性	table[[x,P(x)],[1,3],[2,8],[3,7],[4,9],[5,1]]	$\begin{array}{c} x & P (x) \\ 1 & 3 \\ 2 & 8 \\ 3 & 7 \\ 4 & 9 \\ 5 & 1 \end{array}$
9793	描述分布的两项属性	table[[x,P(x)],[1,1],[2,8],[3,27],[4,64]]	$\begin{array}{c} x & P (x) \\ 1 & 1 \\ 2 & 8 \\ 3 & 27 \\ 4 & 64 \end{array}$
9794	描述分布的两项属性	table[[x,P(x)],[10,20],[2,0],[21,20],[21,5],[25,52],[63,63]]	$\begin{array}{c} x & P (x) \\ 10 & 20 \\ 2 & 0 \\ 21 & 20 \\ 21 & 5 \\ 25 & 52 \\ 63 & 63 \end{array}$
9795	求解矩阵方程	[[-5,2],[4,-4]][[x1],[x2]]=[[50],[-52]]	$[\begin{array}{c} - 5 & 2 \\ 4 & - 4 \end{array}] [\begin{array}{c} x \cdot 1 \\ x \cdot 2 \end{array}] = [\begin{array}{c} 50 \\ - 52 \end{array}]$
9796	求解矩阵方程	[[a+10,9z+1,2m],[6k,2,1]][[9a,2z,8m],[9k,2,3]]=[[20,-32,90],[45,4,4]]	$[\begin{array}{c} a + 10 & 9 z + 1 & 2 m \\ 6 k & 2 & 1 \end{array}] [\begin{array}{c} 9 a & 2 z & 8 m \\ 9 k & 2 & 3 \end{array}] = [\begin{array}{c} 20 & - 32 & 90 \\ 45 & 4 & 4 \end{array}]$
9797	求出余子式矩阵	[[5,44],[10,8]]	$[\begin{array}{c} 5 & 44 \\ 10 & 8 \end{array}]$
9798	求频率表的的组上限和组下限	table[[Class,Frequency],[90-99,4],[80-89,6],[70-79,4],[60-69,3],[50-59,2],[40-49,1]]	$\begin{array}{c} Class & Frequency \\ 90 - 99 & 4 \\ 80 - 89 & 6 \\ 70 - 79 & 4 \\ 60 - 69 & 3 \\ 50 - 59 & 2 \\ 40 - 49 & 1 \end{array}$
9799	求出余子式矩阵	[[a,b,c],[d,e,f],[g,h,i]]	$[\begin{array}{c} a & b & c \\ d & e & f \\ g & h & i \end{array}]$
9800	求二项分布事件的概率	n=14 , x=6 , p=0.20	$n = 14$ , $x = 6$ , $p = 0.2$