Multiple of both 2 and 3 <=> multiple of 6 So require 2 digit multiples of 6. 2*6 = 12 and 16*6=96 So the answer is 16-2+1 = 15
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There are 898 three-digit even numbers. Nine of them are multiples of 55. That leaves 889 * * * * * There are 450 three-digit even numbers and 17 of them are multiples of 55. So that leaves 433.
There are 9*10*9 = 810 such numbers.
There are 600 such numbers.
no it is a prime number (prime means its multiples are only 1 and itself composite numbers can have multiples of many other things)