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What is the unit digit of the expression (11 + 22 + 33)3?
1. 1
2. 4
3. 6
4. 8

1 Answer

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Best answer
Correct Answer - Option 4 : 8

Given:

The given expression is (11 + 22 + 33)3

Concept used:

Basic concept of power and number system

Calculation:

(11 + 22 + 33)3

The unit digit of 11 = 1

The unit digit of 22 = 4

The unit digit of 33 = 7

Now, sum of all digits = 1 + 4 + 7 = 12

∴ the unit digit of (12)3 = 1728

So, the unit digit of expression (11 + 22 + 33)3is 8

Hence, option (4) is correct

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