DRDO Multi tasking staff Model paper 3

Here, the digits are first added and then multiplied by their difference.
5 & 9 = 56 → (5 + 9) × 4 = 56
10 & 14 = 96 → (10 + 14) × 4 = 96
13 & 17 = ? → (13 + 17) × 4 = 120
Hence, 120 is the correct alternative.