Discussion

Explanation:

Unit’s digit of multiplication of more than one number depends on the multiplication of unit’s digits of individual numbers.

So, multiply the unit’s digits of the expression given, i.e., 1 × 7 × 3 × 9 × 1 × 3 × 4 × 6 = 13608. 

Therefore, 8 will be at the unit’s place.

Note: We don’t have to multiply all last digits and calculate the answer as 13608. Successively multiply the unit’s digits of previous answer with next number.

For e.g., last digit of 7 × 3 × 9 = last digit of (7 × 3) × 9 = 1 × 9 = 9.

Hence, 8.

» Your doubt will be displayed only after approval.


Doubts


Feedback

Help us build a Free and Comprehensive Preparation portal for various competitive exams by providing us your valuable feedback about Apti4All and how it can be improved.


© 2023 | All Rights Reserved | Apti4All