A person born on a Monday in July 1921 retires in 1981 on the day he attains the age of 60. He retires on

Monday

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Wednesday

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Friday

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Saturday

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Solution

The correct option is C Friday
As we know that date jumps by one day when year is changed and date jumps by $5$ days in a four year time gap because it include a leap year.
Since there will be $15$ leap years between $1921$ to $1981$ .
So, he retires in $1981$ on the day $= \frac{5 \times 15}{7} \Rightarrow 5 (R e m a i n d e r)$
Hence, it will be $5^{t h}$ day of week that is $F r i d a y .$

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