answere 5,6,7 question
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A normal year has 365 days.
365 days=364 days+1day
364 days=7*52days
=52 weeks.
Therefore, a normal year has 52 weeks and 1day.
That 1 day has 7 possibilities.
P(getting 53 Sundays in a normal year)=1/7.
A leap has an extra day.
Therefore 52 weeks and 2 days.
Hence P(getting Sunday in leap year)=2/7.
Hope it helps.
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