What is the unit's digit of the number 6 256 – 4 256
6256
Units place = 6
4256
The units place gets
repeated after every 3rd power
43]85
x 4
= {[...4]3}28
x 4 x 4
= [{....4}3]9
x 4 x 4 x 4
= {[....4]3}3 x 43
= [.....4]3 x
...4
= ...4 x ....4
= ....6
Therefore, the units place
for [6256 - 4256]
= 6 – 6 = 0
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