Number System
If the sum of the two numbers is 22 and the sum of their squares is 404, then the product of the numbers is:

40
88
80
44

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Number System
On a new year eve, every student of a class sends a card to every other student. If the total number of cards delivered is 1980, how many students are there in the class ?

41
47
43
45

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP