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Find a if 17th and 18th terms in the exp...

Find a if 17th and 18th terms in the expansion of `(2+a)^(50)` are equal.

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RD SHARMA ENGLISH-BINOMIAL THEOREM-All Questions
  1. Find the 11th term from the end in the expansion of (2x-1/(x^2))^(25)d...

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  2. Find n, if the ratio of the fifth term from the beginning to the fi...

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  3. Find a if 17th and 18th terms in the expansion of (2+a)^(50) are eq...

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  4. Show that the middle term in the expansion of (1+ x)^(2n) is (1.3.5…(...

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  5. Prove that the coefficient of the middle term in the expansion of (1+x...

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  6. Find the coefficient of x^(10) in the binomial expansion of (2x^2-3/x)...

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  7. Find the coefficient of x^6y^3 in the expansion of (x+2y)^9dot

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  8. Find the coefficient of x^(40) in the expansion of (1+2x+x^2)^(27)dot

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  9. Find the coefficient of x^5 in the expansioin of the product (1+2x)^6(...

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  10. Find the term independent of x in the expansion of: (x-1/x)^(12) .

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  11. Find the term independent of x in the expansion of: \ (2x-1/x)^(10)dot

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  12. In the binomial expansion of (1+a)^(m+n) , prove that the coefficient ...

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  13. Prove that the coefficients of x^n in (1+x)^(2n) is twice the coeffici...

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  14. Find a positive value of m for which the coefficient of x^2 in the exp...

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  15. If the coefficients of (r-5)^(t h) and (2r-1)^(t h) terms in the expan...

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  16. The coefficient of three consecutive terms in the expansion of (1+x)^(...

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  17. If the coefficients of a^(r-1),\ a^r and \ a^(r+1) in the binomial exp...

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  18. The coefficients of (r-1)^(t h),\ r t h\ a n d\ (r+1)^(t h) terms in t...

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  19. If the fourth term in the expansion of (a x+1/x)^n \ is \ 5/2,\ then ...

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  20. The sum of the coefficients of first three term in the expansion of (x...

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