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Originally Posted by manasi4gre
Can u give an explaination, dsaqwert?
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in consequtive 7 days, every day has two possibility, either it rains or not, so 7 days have 2^7 different scenarios in terms of rainy days. and in seven days there is 7c5 different ways that only 5 days is rainy
so 7c5/2^7