9 groups of 9 is equivalent to multiplying 9 by 9, which equals 81. When you have 9 groups, each containing 9 items, you can think of it as adding 9 nine times, which also equals 81. In mathematical terms, this can be represented as 9 x 9 = 81.
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Oh, dude, 9 groups of 9 is like 81. It's simple math, man. You just multiply 9 by 9 and bam, you get 81. Easy peasy, lemon squeezy.
The product of 3 groups of 9 is 27. Ie, 9+9+9 = 27, or 9 x 3 = 27.
2 groups of 9 9 groups of 2 6 groups of 3 3 grouos of 6 1 group of 18 18 groups of 1
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9 groups of 5 are there in 45.
There are 4 groups of 9 in 36. 4x9=36 Or you can say there are 4 9's in 36