Multiple choice general knowledge One billion seconds is about _______ years 32 31 35 33.6 Reveal answer Fill a bubble to check yourself A Correct answer Explanation One billion seconds equals approximately 31.7 years, which rounds to 32 years. Calculate: 1,000,000,000 ÷ (60 × 60 × 24 × 365.25) ≈ 31.7 years.