What is the unit's digit of  829543 × 716272 − 45382 Select an answerA6B7C4D5

To find the unit's digit of the expression 829543 × 716272 - 45382, we only need to consider the unit's digit of each number involved.

Step 1: Look at the unit's digit of the first two numbers in the multiplication part of the expression. The unit's digit of 829543 is 3 and the unit's digit of 716272 is 2.

Step 2: Multiply these two digits together. 3 × 2 = 6. So, the unit's digit of the multiplication part (829543 × 716272) is 6.

Step 3: Now, look at the unit's digit of the number in the subtraction part of the expression. The unit's digit of 45382 is 2.

Step 4: Subtract this digit from the unit's digit of the multiplication part. 6 - 2 = 4.

So, the unit's digit of the expression 829543 × 716272 - 45382 is 4. Therefore, the answer is C4.