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Events & Promotions

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June 25, 1982, fell on a Friday. On which day of the week

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Manager
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Joined: 06 Nov 2008
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June 25, 1982, fell on a Friday. On which day of the week [#permalink]

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New post 11 Dec 2008, 18:18
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

June 25, 1982, fell on a Friday. On which day of the week did June 25, 1987, fall? (Note: 1984 was a leap year.)

A. Sunday
B. Monday
C. Tuesday
D. Wednesday
E. Thursday

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Re: leap [#permalink]

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New post 11 Dec 2008, 20:30
haichao wrote:
June 25, 1982, fell on a Friday. On which day of the week did June 25, 1987, fall? (Note: 1984 was a leap year.)

A. Sunday
B. Monday
C. Tuesday
D. Wednesday
E. Thursday


June 25, 1982 - June 24, 1983 = 365 days
June 25, 1983 - June 24, 1984 = 366 days (leap year)
June 25, 1983 - June 24, 1985 = 365 days
total days = 1096 days
no of weeks = 1096 days/7 = 156 weeks and 4 days
4th days is June 24, 1985 and it is monday. so June 25, 1985 has to be tuesday.

C.
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Re: leap [#permalink]

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New post 11 Dec 2008, 21:11
Question is June 25, 1987?

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Re: leap [#permalink]

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New post 11 Dec 2008, 21:20
My approach is

no. of weeks = 365/7 = remainder is 1 . so for normal yr. the day will shift by 1.
and for leap yr 366/7 remainder is 2, so the days will shift by 2.

by applying above rules,

June 25, 1982 is Friday
June 25, 1983 is Saturday
June 25, 1984 is Monday (Since leap yr)
June 25, 1985 is Tuesday
June 25, 1986 is Wednesday
June 25, 1987 is Thursday

Kudos [?]: 45 [0], given: 0

Re: leap   [#permalink] 11 Dec 2008, 21:20
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June 25, 1982, fell on a Friday. On which day of the week

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