<p>I’d say k is 7 and h is 11 so k+h is 18.</p>
<p>exactly, that’s what i chose and it’s one of the answer. But I got it wrong. The right answer is 10. I don’t understand why?</p>
<p>Ah, they wanted k and h to be 3 and 7. That’s the smallest they can be. </p>
<p>Note: they said minimize.</p>
<p>No, 10 is the incorrect answer. 18 is the right answer, because 7 and 11 are prime and every number in between those two are not prime. With 3 and 7, 5 would be a prime number and thus that is not the right answer.</p>
<p>Viewfrom, most likely you are remembering incorrectly or you just misbubbled the answer. The right answer is definitely 18.</p>
<p>They were looking for the two smallest prime numbers with an odd number that was not prime. Since 9 is the only number that comes to mind, 7+11=18</p>