Number System Practice Test 5

Question : 36 of 40

Marks: +1, -0

Find the digit at the unit place in

(357)^69

Solution:

Unit place digits

7^1 = 7

7^2= 9

7^3 = 3

7^4 = 1

7^5 = 7

So, its circle is 4,

69/4= 17

and the remainder is 1.
So,

7^1 = 7

Hence, the unit digit is 7.

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