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Question

Write the ones digit of the cube of each of the following numbers
A) 231
B) 358
C) 491
D) 854
E) 987
F) 752

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Solution

Multiply one's digit
(231)3=231×231×231
One's digit =1×1×1=1

(358)2=8×8×8=512
One's digit =2

(491)3=1×1×1=1

(854)3=4×4×4=64
One's digit =4

(987)3=7×7×7=343
One's digit =3

(752)3=2×2×2=8

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