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What is the units digit of \(36^y?\)

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by VJesus12 » Fri Jul 24, 2020 7:06 am

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What is the units digit of \(36^y?\)

(A) \(y\) is a positive integer.

(B) \(y\) is an even integer.

[spoiler]OA=A[/spoiler]

Source: Veritas Prep
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Source: — Data Sufficiency |

What is the units digit of 36^y

(A) y is a positive integer.
Since for any positive integer unit digit will always remain 6, hence sufficient

(B) y is an even integer.
lets take y=0, unit digit will be 1,
y=2, unit digit =6
hence not sufficient
So, A is the correct choice
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