Exams › SSC CGL (Prelims) › General

If 5&3 = 40 and 6&4 = 60, then 7&5 = ?

1. 70
2. 84
3. 96
4. 90

Correct answer: 84

Solution

A fitting pattern is \(a & b = a \times b + a^2\). For 5&3, \(5×3 + 5^2 = 15 + 25 = 40\); for 6&4, \(6×4 + 6^2 = 24 + 36 = 60\). Thus, 7&5 = \(7×5 + 7^2 = 35 + 49 = 84\).

Related SSC CGL (Prelims) General questions

• What comes in place of (?) in the series: 2, 6, 18, 54, ?
• What comes next? 8, 20, 44, 92, ?
• One number does not fit into the given factorial series. Identify it: 3, 6, 24, 120, 720, 800.
• What should come at the place of the question mark (?) in the following series? 2, 3, 8, 9, 26, 27, ?
• Choose the odd one out:
• Complete the pattern: 120, 96, 76.8, 61.44, ?

⚔️ Practice SSC CGL (Prelims) General free + battle 1v1 →