Find the value of (49² − 42²) ÷ 7.
Show answer & explanation
Correct answer: C
Explanation
Given:
(49² − 42²) ÷ 7
Using the formula:
a² − b² = (a − b)(a + b)
= (49 − 42)(49 + 42) ÷ 7
= (7 × 91) ÷ 7
= 91
SSC MTS 2026 PYQ — Question 10
SSC MTS - 9 Feb 2026 - Shift 2 • Quantitative Aptitude • Q10