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In the expansion of (3sqrt4+1/(4sqrt6)...

In the expansion of `(3sqrt4+1/(4sqrt6))^20`

A

(i),(iii)

B

(ii),(iii)

C

(i),(ii)

D

All three

Text Solution

Verified by Experts

The correct Answer is:
2
`T _(r+1)=""^(20)Cr.4^((20-r)/(3))6^((-r)/(4),r=0`
`(20-r)/(3),(r)/(4)` both must be intergers.
`therefore r=8,20`
` therefore 2 Rational Terms `
& 19 Irrational Terms
Also middle term is Irrational .
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