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vovikov84 [41]
3 years ago
15

What is 9 10????????????????????????????

Mathematics
1 answer:
kozerog [31]3 years ago
5 0
9+10=?
9 = 3x3
10= 5x2
3 (from 3x3) x 5 (from 5x2) = 15
3 (from 3x3) x 2 (from 5x2) = 6
15+6=21
Therefore 9+10=21
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