Question

Find the unit digit of (23758)⁶¹⁴⁹

Answer 1

EXAMPLE :

4993?

Now we have two methods to solve this but we choose the best way to solve it i.e. through cyclicity

We know the cyclicity of 4 is 2

Have a look:

41 =4

42 =16

43 =64

44 =256

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