Problem Solving (PS) | Re: If n and k are positive integers and n + k < 8, how many different

edwin.que
If n and k are positive integers and n + k < 8, how many different values of the product nk are possible
n + k < 8
(n, k) = {(1,1),(1,2),(1,3),(1,4),(1,5),(1,6),(2,1),(2,2),(2,3),(2,4),(2,5),(3,1),(3,2),(3,3),(3,4),(4,1),(4,2),(4,3),​​​​​​​​(5,1),(5,2),(6,1)}

nk = {1,2,3,4,5,6,8,9,10,12}: 10 different values of nk

​​​​​​​IMO C
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Statistics : Posted by Kinshook • on 28 Oct 2023, 16:54 • Replies 9 • Views 4426

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