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If '^(n)C(12) = ""^(n)C(8) then n is e...

If `'^(n)C_(12) = ""^(n)C_(8)` then n is equal to

A

26

B

12

C

6

D

20

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The correct Answer is:
D
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HIMALAYA PUBLICATION-COMMON ENTRANCE TEST - 2017-QUESTION BANK
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  8. The value of lim(theta to 0)(1-cos 4theta)/(1-cos 6 theta) is

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  9. Write the converse and contrapositive of the statement " If x ...

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  10. If coefficient of variation is 60 and standard deviation is 24, then a...

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  12. Let f: R to R be defined by f(x) = x^(4), then

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  13. The range of sec^(-1)x is

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  14. If tan^(-1)x + tan^(-1)y=4pi//5, then cot^(-1)x + cot^(-1)y is equal t...

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  15. If f(x) = 8x^(3), g(x) = x^((1//3)), then fog(x) is

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  16. If A = 1/pi [(sin^(-1)(xpi),tan^(-1)(x/pi)),(sin^(-1)(x/pi),cot^(-1)(p...

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  17. If a matrix A is both symmetric and skew symmetric, then

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  18. If 2[[1,3],[0,x]]+ [[y,0],[1,2]]= [[5,6],[1,8]] , then the value of x...

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  19. Binary operation * on R -{-1} defined by a ** b = (a)/(b+1) is

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  20. |[3,x],[x,1]|= |[3,2],[4,1]| then x is equal to

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