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Tamil Nadu Board of Secondary EducationHSC Science Class 11

What is the chance that non-leap year - Mathematics

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Question

What is the chance that non-leap year

Sum

Solution

No of days = 365

= `365/7` weeks

= 52 weeks + 1 day

In 52 weeks we have 52 Sundays.

So we have to find the probability of getting the remaining one day as Sunday.

The remaining 1 day can be Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday

(i.e.,) n(S) = 7

In the n (Sunday) = A {Saturday to Sunday or Sunday to Monday}

(i.e.,) n(A) = 1

So, P(A) = 1.

∴ Probability of getting 53 Sundays `("n"("A"))/("n"("S")) = 1/7`

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Chapter 12: Introduction to probability theory - Exercise 12.1 [Page 247]

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Samacheer Kalvi Mathematics - Volume 1 and 2 [English] Class 11 TN Board
Chapter 12 Introduction to probability theory
Exercise 12.1 | Q 4. (i) | Page 247

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