JEE Main 6 April 2026, Shift 2, Maths Q22

Question 22 of 75 in this shift, Maths question 22 of 25, Section B.

(1-x^3)^{10}=\sum_{r=0}^{10}a_r x^r(1-x)^{30-2r}

, then

\frac{9a_9}{a_{10}}

is equal to __________.

Official answer

NTA final key.

Chapter: Binomial Theorem
Topic: No close match in our taxonomy
Idea tested: No close match in our taxonomy

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.