A number theory problem by A Former Brilliant Member
Number Theory
Level
pending
The lowest common multiple and the greatest common divisor of two positive integers are 4992 and 4, respectively. If one of the numbers is equal to 128, what is the value of the other number?
182
156
165
19968
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1 solution
L C M ( x , y ) x G C F ( x , y ) = x y
4 9 9 2 x 4 = 1 2 8 y
y = 1 5 6