When 231 is divided by 5 the remainder is

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When 2³¹ is divided by 5 the remainder is

1. 4
2. 3
3. 2
4. 1

Correct Option: B

We can write ,

2³¹ = (2⁸)⁴ ÷ 2 = (256)⁴ ÷ 2 =	......6	= ......3
	2

Clearly, the remainder will be 3 when divided by 5.
Illustration :
23 ÷ 5 gives remainder = 3
83 ÷ 5 gives remainder = 3
Hence required remainder is 3 .