Symbiosis National Aptitude Test SNAP 2016 Paper

As, 5 × 8 = 28 → 5 × 8 = 40 → 5 + 8 = 13,
12 – 1 = 12 → 40 – 12 = 28,
3 × 7 = 12 → 3 × 7 = 21 → 3 + 7 = 10,
10 – 1 = 9 → 21 – 9 = 12, and
8 × 6 = 35 → 8 × 6 = 48 → 8 + 6 = 14,
14 – 1 = 13 → 48 – 13 = 35,
Similarly,
13 × 13 = ? → 13 × 13 = 169 → 13 + 13 = 26,
26 – 1 = 25 → 169 – 25 = 144