A square of number is marked in a calender.the sum of these numbers is 90.what are the numbers?
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A square of 9 days in marked in a calendar, which I assume lie in the same month. Thus, they would be x, x+1, x+2 (1st week of square), x+7, x+8, x+9 (2nd week of square), and x+14, x+15, x+16 (3rd week of square). Their sum is 90, thus 9x + 72 = 90, and so 9x = 18. Thus, x = 2. Therefore, the square of 9 days is 2, 3, 4 (1st week), 9, 10, 11 (2nd week), and 16, 17, 18 (3rd week). In addition, a month must be chosen so that x is not a Friday or a Saturday, since if it were then one would have a wraparound effect, which would disrupt the square.
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write the full question.
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