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:

88
80
40
44

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Number System
A box contains 5 red, 4 black and 4 blue balls. If 3 balls are drawn randomly from the box, what is the probability that there are exactly 2 blue balls in the three drawn balls ?

27/143
29/145
28/144
30/146

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