What is the unit digit of 178 × 593 + 157?
1
Given:
178 × 593 + 157
Used formula:
The unit digit of a number is the digit at the unit place of the number.
Calculation:
178 × 593 + 157
⇒ 178 × 593 + 157
⇒ 105554 + 157
⇒ 105711
∴ The unit digit of the given expression is 1.
Shortcut Trick
We do not need to solve all steps to find the unit digit,
we only use the unit digits to find it,
Now, the given expression: 178 × 593 + 157
Taking only the unit digits, we have
8 × 3 + 7 = 24 + 7 = 31
∴ The unit digit of the given expression is 1.
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
Find the unit digit in the given factor (3451) 51 × (531) 43 .
A. 6
B. 4
C. 1
D. 9
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
