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AP EAMCET · Maths · Binomial Theorem

The number of rational terms in the expansion of 314+716144 is

  1. A 33
  2. B 23
  3. C 12
  4. D 13
Verified Solution

Answer & Solution

Correct Answer

(D) 13

Step-by-step Solution

Detailed explanation

Let, S=314+716144 General term of S is given by Tr+1=Cr144 3144-r47r6 Now, for the rational terms 144-r4∈Wwhole number For this r must be the multiple of 4 therefore r=0, 4, 8, ..., 140, 144 And, r6∈Wwhole number For this r…