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!
Monday, April 06, 2009
Those Question Marks Need to be Removed
What number should logically replace the ?
4 5 9 4 2
8 6 2 6 4
2 3 ? 2 7
7 1 2 3 5
3 8 3 6 2
Leave your answer or, if you want to post a question of your own, send me an e-mail. Look in the about section to find my e-mail address. If it's new, I'll post it soon.
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6?
ReplyDeleteCounting columns
ReplyDelete2+4+7+5+2 = 20
4+6+2+3+6 = 21
9+2+?+2+7 should be 22
5+6+3+1+8 = 23
4+8+2+7+3 = 24
solving 9+2+?+2+7 = 22
? = 6
Counting columns
ReplyDelete2+4+7+5+2 = 20
4+6+2+3+6 = 21
9+2+?+2+7 should be 22
5+6+3+1+8 = 23
4+8+2+7+3 = 24
solving 9+2+?+2+7 = 22
? = 6
yep. 6!
ReplyDelete