alleryThe units (one's) digit of (78)³ is:
A2
B6
C8
D4
Answer & Solution
Correct answer: A. 2
The units digit of n³ depends only on the units digit of n.
For 78, the units digit is 8 and 8³ = 512, whose units digit is 2. So (78)³ ends in 2.
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