If 10×10 = 1, 20×20 = 4, then 30×30 = ?
Show answer & explanation
Correct answer: C
Explanation
10 × 10 = 100 → 100 ÷ 100 = 1
20 × 20 = 400 → 400 ÷ 100 = 4
So,
30 × 30 = 900
900 ÷ 100 = 9
Correct answer: (C) 9
SSC Selection Post - Higher Secondary Level - 28th July 2025 - Shift 2 • Reasoning • Q95
If 10×10 = 1, 20×20 = 4, then 30×30 = ?
Correct answer: C
Explanation
10 × 10 = 100 → 100 ÷ 100 = 1
20 × 20 = 400 → 400 ÷ 100 = 4
So,
30 × 30 = 900
900 ÷ 100 = 9
Correct answer: (C) 9