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The sum of even terms in the expansion o...

The sum of even terms in the expansion of `(x+a)^n` is

A

`1/2(7^7+3^7)`

B

`1/2(7^7-3^7)`

C

`1/4(7^7+3^7)`

D

`1/4(7^7-3^7)`

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The correct Answer is:
A
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PATHFINDER-BINOMIAL THEOREM-QUESTION BANK
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  2. First three terms in the expansion of (x+a)^n are respectively 128, 22...

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  5. Match List-I with List-II

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  15. If ((1+x)/(1-x))^n=1+a1x+a2x^2+…….+arx^r+…….. then prove that a1+a2+a3...

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  17. If (1+x)^n=a0+a1x+a2x^2+…….+anx^n then prove that (1+(a/a0))(1+(a2)/(a...

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