defence exam ITBP (Telecommunication) Head Constable Mock Test 2024 Mathematics Binomial Theorem Special Terms of Binomial Expansion
Term independent of x in the expansion of \(\rm\left(x-\frac{1}{3x^2}\right)^9\) is:
1
9C3 \(\rm\left(\frac{-1}{3}\right)^3\)
2
9C6 \(\rm\left(\frac{-1}{3}\right)^6\)
3
9C3 \(\rm\left(\frac{1}{3}\right)^3\)
4
9C6 \(\rm\left(\frac{1}{3}\right)^6\)