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The value of r for which .^(20)C(r ), ...

The value of r for which
`.^(20)C_(r ), .^(20)C_(r - 1) .^(20)C_(1) + .^(20)C_(2) + …… + .^(20)C_(0) .^(20)C_(r )` is maximum, is

A

20

B

15

C

11

D

10

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The correct Answer is:
A
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CENGAGE-JEE 2019-MCQ
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  3. The value of r for which .^(20)C(r ), .^(20)C(r - 1) .^(20)C(1) + .^...

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  4. Let (x+10)^(50)+(x-10)^(50)=a(0)+a(1)x+a(2)x^(2)+...+a(50)x^(50) for a...

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  5. Let S(n) = 1 + q + q^(2) +...+ q^(n) and T(n) = 1 + ((q +1)/(2)) + ((q...

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  6. Ratio of the 5^(th) term from the beginning to the 5^(th) term from th...

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  7. If ""^(n)C(4),^(n)C(5)" and "^(n)C(6) are in A.P. then find n.

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  11. In a class of 60 students, 40 opted for NCC, 30 opted for NSS and 20 o...

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  13. If the Boolean expression (p oplusq)wedge (~p Theta q) is equivalent t...

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  15. Given three statements P: 5 is a prime number, Q:7 is a factor of 192,...

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  18. A data consists of n observations x(1), x(2), ..., x(n). If Sigma(i=1)...

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