What is the unit digit of 628-322 -

The correct option is A 7Solution: Unit digit of 628 is 6 and unit digit of 322 is 9 (since 22= 4k+2). So, unit digit of given expression is (16 – 9)= 7. Opt ...

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Unit Digit of a Number

What is the u...

Question

What is the unit digit of (6²⁸–3²²)?

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Solution

The correct option is A 7
Solution: - Unit digit of 6²⁸ is 6 and unit digit of 3²² is 9 (since 22= 4k+2). So, unit digit of given expression is (16 – 9)= 7. Option (a).

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What is the unit digit of (628–322)?

The correct option is A 7Solution: - Unit digit of 628 is 6 and unit digit of 322 is 9 (since 22= 4k+2). So, unit digit of given expression is (16 – 9)= 7. Option (a).

What is the unit digit of (6²⁸–3²²)?

The correct option is A 7
Solution: - Unit digit of 6²⁸ is 6 and unit digit of 3²² is 9 (since 22= 4k+2). So, unit digit of given expression is (16 – 9)= 7. Option (a).