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C(n,0)+C(n,1)+C(n,2)+...+C(n,n)=...

`C(n,0)+C(n,1)+C(n,2)+...+C(n,n)=`

A

`2+2^(2) +2^(3) P+…… +2^(n)`

B

`1+2+2^(2)+2^(3) +….+2^(n)`

C

`1+2+2^(2)+2^(3) +2^(3) +…..+ 2^(n-1)`

D

`2+2^(2) +2^(3) +…..+2^(n-1)`

Text Solution

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The correct Answer is:
A
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NDA PREVIOUS YEARS-QUESTION PAPER 2021-MULTIPLE CHOICE QUESTIONS
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  2. What is the sum of the coefficients of first and last terms in the ex...

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  3. If the first term of an AP is 2 and the sum of the first five terms i...

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  4. Consider the following statements : 1. If each term of a GP is mult...

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  5. How many 5-digit prime numbers can be formed using the digits 1, 2, 3...

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  6. If f(x+1)=x^(2)-3x+2 then f(x) is equal to

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  7. If x^(2) , x, -8 are in AP, then which one of the following is correct...

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  8. The third term of a GP is 3. What is the product of the first five ter...

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  9. The element in the i^(th) row and the j^(th) column of a determinant ...

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  10. With the numbers 2, 4, 6, 8, all the possible determinants with these...

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  11. What is the radius of the circle 4x^(2) +4y^(2) -20x +12y -15=0?

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  12. A parallelogram has three consecutive vertices (-3, 4), (0, -4) and (...

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  13. If the lines y + px = 1 and y-qx = 2 are perpendicular, then which on...

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  14. If A, B and C are in AP, then the straight line Ax + 2By+C =0 will al...

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  15. If the image of the point (-4, 2) by a line mirror is (4, -2), then w...

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  16. tan^(-1) x +cot^(-1)x =(pi)/(2) holds, when

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  17. If tan A =(1)/(7), then what is cos2A equal to ?

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  18. The sides of a triangle are m, n and sqrt(m^(2)+n^(2)+mn)., What is t...

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  19. What is the area of the triangle ABC with sides a = 10 cm, c=4 cm and...

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  20. Consider the following statements : 1. A = {1, 3, 5} and B = {2,4,...

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