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Question

# In a non-leap year the probability of getting 53 Sundays or 53 Tuesdays or 53 Thursdays is.

A
17
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B
27
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C
37
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D
47
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Solution

## The correct option is C 37Non-leap year has 365 days1 year =52 weeks=52×7days=364 days [It contains 52 Sundays, Mondays and so on]. ∴1 day will be left sample space for this 1 day ={Mon, Tue, Wed, Thurs, Fri, Sat, Sun}P[53 Sundays]=17P[53 Tuesdays]=17 P[53 Thursdays]=17 P(53 Sundays or 53 Tuesdays or 53 Thursdays)=P(53 Sundays)+P(53 Tuesdays)+P(53 Thursdays)=17+17+17 =37

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