If 9 Δ 2 = 7 and 6 Δ 3 = 3, what is 5 Δ 1?
Show answer & explanation
Correct answer: A
Explanation
9 Δ 2 = 9 − 2 = 7
6 Δ 3 = 6 − 3 = 3
That is, Δ means subtraction (−).
Therefore,
5 Δ 1 = 5 − 1 = 4
Answer: 4
SSC Selection Post 2025 PYQ — Question 86
SSC Selection Post - Higher Secondary Level - 29th July 2025 - Shift 2 • Reasoning • Q86