Question

Find the unit digit of the following expression - (1397)^1394 + 148^148
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Answer 1

Answer:

As given 125

813

×553

3703

×4532

828

In given expression

unitofdigit1stterm=5

unitdigitin2ndterm=3

unitdigit3rdterm=2

Sum of unit of digit =5+3+2=10

Unitdigit=0

Answer 2

Answer:

$- 1397 \times 1394 + 148 \times 148 = - 1925514$