In a race, the odd favour of cars P, Q, R, S are 1 : 3, 1 : 4, 1 : 5 and 1 : 6 respectively. Find the probability that one of them wins the race.

• ক 319/420 ✅ সঠিক উত্তর
• খ 231/320
• গ 231/523
• ঘ 219/340