What is the square of 129?
Show answer & explanation
Correct answer: B
Explanation
129² = 129 × 129
= 129 × (130 − 1)
= 129 × 130 − 129
= 16770 − 129
= 16641
SSC CHSL 2025 PYQ — Question 56
SSC CHSL - 17 Nov 2025 - Shift 2 • Quantitative Aptitude • Q56