Question 75

Select the number pair that does NOT belong in the following group.
(1, 1), (4, 64), (8, 512), (9, 719)

Solution

all pair are represent number & cube of itself

$$1^3=1$$ =(1, 1)

$$4^3=64$$ = (4, 64)

$$8^3=512$$ = (8, 512)

$$9^3=729$$ = (9, 719) wrong

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