Question
Find the unit digit in the given factor (3451) 51 × (531) 43 . A. 6 B. 4 C. 1 D. 9
The correct answer is
C
Given:
Number - (3451)51 × (531)43
Calculation:
As you can see, the unit digits of both numbers are 1.
Moreover, any power of 1 will be 1.
Therefore, the unit digit of the product is 1.
∴ The unit digit is 1.
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Important Questions from Unit Digit
The unit digit in 4 × 38 × 764 × 1256 is:
How many times does the number 3 occur in unit's place for numbers ranging from 1 to 100?
A. 20
B. 11
C. 10
D. 19
What is the unit digit of 178 × 593 + 157?
Find the unit digit of $(123)^{123} \times (347)^{347} \times (568)^{568}$.
Find the unit digit of the equation.
312 + 322 + 332 + 342 + 352 + 362 + 372 + 382 + 392
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