In a list of 30 integers, 18 of the integers are multiples of 5. If 10 of the multiples of 5 are odd integers, what is the maximum number of even integers in the list?

Question

Mathematics

Lucian Branch

30 October, 00:35

In a list of 30 integers, 18 of the integers are multiples of 5. If 10 of the multiples of 5 are odd integers, what is the maximum number of even integers in the list?

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Zachariah Hoffman · Answer 1

Without knowing anything about the other 12 integers, you could assume that they are all even, just not divisible by 5.

In additon 18 - 10 = 8 integers that are divisible by 5 all end in zero which is even.

So you have 8 + 12 which is 20 integers that could be even. Answer