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Find a, b and n in the expansion of (a +...

Find a, b and n in the expansion of `(a + b)^(n)` if the first three terms of the expansion are 729, 7290 and 30375 respectively.

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MODERN PUBLICATION-BINOMIAL THEOREM-EXERCISE
  1. Find the greatest term in (x+y)^n, when x=11, y=4, n = 30.

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  2. Find the greatest term in (1+ 4x)^8, when x=1/3.

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  3. Find a, b and n in the expansion of (a + b)^(n) if the first three ter...

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  4. The first three terms in the expansion of a binomial are 1, 10 and 40....

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  5. The coefficients of three consecutive terms in the expansion of (1+a)^...

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  6. The coefficients of three consecutive terms in the expansion of (1+a)^...

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  7. If the coefficients of 5th, 6th , and 7th terms in the expansion of (1...

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  8. If the coefficients of x, x^2 and x^3 in the binomial expansion of (1+...

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  9. If three successive coefficients in the expansion of (1+x)^n are 28, 5...

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  10. In the expansion of (x +a)^n, the sums of the odd and the even terms a...

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  11. In the expansion of (x +a)^n, the sums of the odd and the even terms a...

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  12. In the expansion of (x +a)^n, the sums of the odd and the even terms a...

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  13. Show that 9^(n+1) - 8n -9 is divisible by 64, whenever n is a positiv...

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  14. Using Binomial theorem, prove that 6^(n)-5n always leaves remainder 1...

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  15. Evaluate the following : ""^12C0+""^12C1+""^12C2+ ....... +""^12C12.

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  16. Evaluate the following : ""^12C0+""^12C2+""^12C4 +""^12C12.

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  17. Evaluate the following : ""^16C1+""^16C3+""^16C5+ ....... +""^16C15.

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  18. Prove that underset (r=0) overset (n) sum 3^r ""^nCr =4^n.

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  19. Prove that ""^nC0+3""^nC1+5""^nC2+........+(2n+1)""^nCn= (n+1)2^n.

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  20. If (1+x)^n =C0+C1 x+ C2 x^2 +....... Cnx^n prove the following : C0-...

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