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If the coefficients of rth and (r+1)t h ...

If the coefficients of rth and `(r+1)t h` terms in the expansion of `(3+7x)^(29)` are equal, then `r` is equals to a. 15 b. 21 c. 14 d. none of these

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CENGAGE PUBLICATION-BINOMIAL THEOREM-All Questions
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  2. In the expansion of (x^3-1/(x^2))^n ,n in N , if the sum of the coeff...

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  3. If the coefficients of rth and (r+1)t h terms in the expansion of (3+7...

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  4. In the expansion of (1+3x+2x^(2))^(6), find the coefficient of x^(11).

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  5. If .^(n-1)Cr=(k^2-3)^nC(r+1), then k belongs to (a) (-oo,-2] (b) [2,...

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  6. Prove that (3!)/(2(n+3))=sum(r=0)^n(-1)^r((n Cr)/((r+3)C3))

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  7. Find the 5th term of the GP. 5/2, 1, .....

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  8. The expression (x+((x^3-1)^(1/2))/2)^5+""(x-((x^3-1)^(1/2))/2)^5 is a ...

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  9. Find ((dy) /dx) of sin(cosx) is

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  11. Coefficient of x^11 in the expansion of (1+x^2)^4(1+x^3)^7(1+x^4)^12 i...

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  15. If the sum 1+2+2^2+......+2^(n-1)is 255, then find the number of ter...

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  16. The coefficient of X^24in the expansion of (1+X^2 )^12(1+X^12)(1+X^24)

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  17. Find the sum of the GP 1+3+9+27+........ 12terms

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  18. The coefficient of x^(53) in the expansion of sum(m=0)^(100) ^100Cm(x-...

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  19. The coefficient of the term independent of x in the expansion of [((x+...

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  20. In the expansion of (1+x+x^3+x^4)^10, the coefficient of x^4 is a..^...

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