2026 · Q62
A person has to make a payment of ₹56. He has twenty-five ₹2 coins and nine ₹5 coins. In how many different ways can he make this payment?
general-mental-abilityquantitative-aptitude
- A3
- B4
- C5
- D6
Explanation
We need 2a + 5b = 56 with a ≤ 25 and b ≤ 9. Since 56 − 5b must be even, b must be even: b = 2 gives a = 23; b = 4 gives a = 18; b = 6 gives a = 13; b = 8 gives a = 8 (b = 0 would need a = 28, exceeding the 25 coins available). That is 4 valid combinations. Hence option B is correct.