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Quantitative Aptitude

Unit Digit of a Number

Find the unit...

Question

Find the unit digit of $3^{200} \times 4^{500}$ ?

A

2

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B

4

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C

8

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D

6

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Solution

The correct option is D 6
Unit's digit of $3^{200}$ is 1.
Unit's digit of $4^{500}$ in 6.
So, the required unit's digit will be the unit's digit of the product of 1 and 6 i.e. 6

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