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# Sir pls solve this question.

Asked by rsudipto 14th December 2018, 9:52 AM
(r+1)th term of binomial expansion (3 - 5x )15 is
if x= 1/5, then (r+1)th term
In the given binomial expansion, there are 16 terms. Hence  nCr values  of 8th term and 9th term are greater than any other term.
But for 9th term power of 3 is less. Hence we start from 8th term and compare each preceding term to get the highest term numerically.

To compare nCr values of neighbouring terms, we use the following relation
8th term = t8 =
7th term = t7 =
6th term = t6 =
5th term = t5 =
4th term = t4 =
3rd term = t3 =
Hence 5th term and 4th term are numerically higher terms than any other term in the given binomial expansion
Answered by Expert 14th December 2018, 2:51 PM
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