Question

9 sets of two-__.
what does nine sets of two mean​

Answer 1

9 sets of 2 - 2+2+2+2+2+2+2+2+2 = 18

• 9 set of 2 means 9 times 2, it is same as 2 sets of 9

i.e [ 9 sets of 2] = [2 sets of 9]

( because mutliplication is commutative)

which simply means we have to add 2 -- 9 times

2+2+2+2+2+2+2+2+2 = 2×9 = 9×2 = 18