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10. Find the probability of havina 5 Tuesdays in the month of August |
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Answer» August has 31 days. So 4*7+3 days. Since 4 weeks so there are 4 Tuesdays guaranteed. Remaining are 3 days. So there can be 7 triplets ie {Sunday, Monday, Tuesday}………….{saturday, Sunday, Monday}. Among these 7 triplets 3 triplets will result in an extra Tuesday. So 3 favourable case among 7 equally likely triplets. So probability = 3/7 |
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