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If the coefficients of x^(7) and x^(8) i...

If the coefficients of `x^(7)` and `x^(8)` in the expansion of `(2+(x)/(3))^(n)` are equal then n =?

A

56

B

55

C

45

D

15

Text Solution

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The correct Answer is:
B
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ICSE-BINOMIAL THEOREM-MULTIPLE CHOICE QUESTIONS
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  2. The number of terms in the expansion of (x+a)^(46)-(x-a)^(46) after si...

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  3. If the coefficients of x^(7) and x^(8) in the expansion of (2+(x)/(3))...

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  4. If (1+x+x)^(2n)=a(0)+a(1)x+a(2)x^(2)+a(2n)x^(2n), then a(1)+a(3)+a(5)+...

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  5. If the coefficient of (r+1) th term and (r+3) th term in the expansion...

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  6. If the coefficients of rth term and (r+4) th term the expansion of (1+...

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  7. The 13 th term in the expansion of (9x-1/(3sqrt(x)))^(18),x gt0 is ...

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  8. If rth term in the expansion of (2x^(2)-1/x)^(12) is independent of x,...

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  9. The term independent of x in the expansion of (2x-1/x)^(10) is

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  10. The coefficients of x^(p) and x^(q)(p,q in N) in the expansion of (1+x...

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  11. The coefficients of x^(11) in the expansion of (2x^(2)+x-3)^(6) is

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  12. The ratio of the coefficient of x^(3) to the term independent of x in ...

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  13. The middle term in the expansion of ((x^(3))/3+3)^(10),x in R is 252, ...

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  14. If the seventh, terms from the beginning and the end in the expansion ...

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  15. If P be the sum of odd terms and Q be the sum of even terms in the exp...

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  16. The coefficient of x^(5) in the expansion of 1+(1+x)+(1+x)^(2)+…….....

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  17. Given the integers r gt 1, n gt 2 and coefficients of (3r) th and (r+2...

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  18. The two consecutive terms in the expansion of (1+x)^(24) whose coeffic...

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  19. The coefficients fo x^(n) in the expansion of (1+x)^(2n) and (1+x)^(2n...

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  20. If the sum of the binomial coefficient in the expansion of (2x+1/x)^(n...

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