Discussion Forum



1)

The unit's digit in the product (3127)173 is :


A) 1

B) 3

C) 7

D) 9

Answer:

Option C

Explanation:

Unit digit in (3127)173 = Unit digit in (7)173.

Now, 74 gives unit digit 1.

(7)173= (74)43 * 71. Thus, (7)173 gives unit digit 7.