JEE Main 2019 — Binomial Theorem Question with Solution
From: JEE Main 2019 (Online) 12th January Evening Slot
Question
The total number of irrational terms in the binomial expansion of (71/5 – 31/10)60 is :
Choose an option
Show full solutionCorrect option: A
Correct answer
A54
Step-by-step explanation
General term Tr+1 = 60Cr,
for rational term, r = 0, 10, 20, 30, 40, 50, 60
no of rational terms = 7
number of irrational terms = 54
for rational term, r = 0, 10, 20, 30, 40, 50, 60
no of rational terms = 7
number of irrational terms = 54
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