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Math Help - maths homework

  1. #1
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    maths homework

    three tuesdays of a month fall on even days .what day of the week was 21st day of the month?
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  2. #2
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    Hello, tooba!

    What did you try?


    Three Tuesdays of a month fall on even days.
    What day of the week was 21st day of the month?

    Since there are three Tuesdays on even days, the calendar must look like this:

    . . . \boxed{\begin{array}{ccccccc}\text{Sun} & \text{Mon} & \text{Tue} & \text{Wed} & \text{Thu} & \text{Fri} & \text{Sat} \\<br />
  & * & \boxed{2} & * & * & * & * \\<br />
* & * & 9 & * & * & * & * \\<br />
* & * & \boxed{16} & * & * & * & * \\<br />
* & * & 23 & * & * & * & * \\<br />
* & * & \boxed{30} &   &   &   &   \end{array}}

    Got it?
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