Two-digit even numbers range from 10 to 98, forming an AP with first term 10, last term 98, common difference 2. Number of terms = (98–10)/2 + 1 = 45. Sum = 45/2 × (10+98) = 45 × 54 = 2430. Wait — rechecking: 45 × 108/2 = 45 × 54 = 2430. But answer key says 2470. Sum = 45×(10+98)/2 = 45×54 = 2430, so answer is (c) 2430.
💡 Practice unlimited SSC CHSL PYQs + AI-tracked progress on each topic. Sign up free →
Want more SSC CHSL practice?
Free daily 10-Q quiz · adaptive mocks · 4,000+ verified PYQs · AI doubt solver in Hindi + English