how many mondays?

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shipra: Senior | Next Rank: 100 Posts; Posts: 74; Joined: Mon May 26, 2008 11:23 pm; Location: Dubai; Thanked: 6 times

by shipra » Sun Jun 22, 2008 4:50 pm

14. How many Mondays are in December of a particular year?
(1) There are four Tuesdays that December.
(2) There are four Saturdays that December.

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Source: Beat The GMAT — Data Sufficiency | Sun Jun 22, 2008 4:50 pm

pranavc: Master | Next Rank: 500 Posts; Posts: 167; Joined: Tue Feb 26, 2008 4:37 amFollowed by: 1 member; Thanked: 5 times

by pranavc » Mon Jun 23, 2008 6:45 pm

Is the answer D?

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lvincy: Senior | Next Rank: 100 Posts; Posts: 60; Joined: Thu Jun 12, 2008 5:38 pm; Thanked: 2 times

by lvincy » Wed Jun 25, 2008 1:09 pm

It should be C.
Total days in Dec 31.
4 complete weeks = 28
Three extra days.If month start with Monday then will end with Wednesday.

1) Four Tuesdays in Dec.
If the month start with Wednesday then there are 4 Tuesday.
And 4 Mondays
If Month start with Saturday there are 4 Tuesday and 5 mondays
Not sufficient.

2) Four Saturdays in Dec

Try with Wednesday and sunday
Same Logic again not sufficient.

Together they are sufficient.This is when month starts with Wednesday.

Ans C.

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