I'm posting one puzzle, riddle, math, or statistical problem a day. Try to answer each one and post your answers in the comments section. I'll post the answer the next day. Even if you have the same answer as someone else, feel free to put up your answer, too!
Going either from top to bottom or from left two right along any column or any row, respectively, the third number is the product of the first and second numbers divided by four.
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30?
ReplyDelete15 is the answer.
ReplyDeleteGoing either from top to bottom or from left two right along any column or any row, respectively, the third number is the product of the first and second numbers divided by four.
For example, the rows are:
6 * 8 = 48 / 4 = 12
10 * 2 = 20 / 4 = 5
15 * 4 = 60 / 4 = 15
and the columns are:
6 * 10 = 60 / 4 = 15
8 * 2 = 16 / 4 = 4
12 * 5 = 60 / 4 = 15.
15 is the answer. As oudeis explained, the rows and columns all work out to x*y/4.
ReplyDelete