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If a and b are positive integers, such that ba = 50625, then (b - 1)b + a - 2 = ?1. 12122. 14173. 13124. 1217 |
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Answer» Correct Answer - Option 2 : 1417 Given: ba = 50625 Calculation: 50625 = 3 × 3 × 3 × 3 × 5 × 5 × 5 × 5 ba = (15)4 ∴ b = 15 and a = 4 Now, (b - 1)b + a - 2 ⇒ (15 - 1)15 + 4 - 2 ⇒ 1419 - 2 ⇒ 1417 |
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