Capgemini
Company
Numerical Ability
Number System
Unit digit of 2^51......
Read Solution (Total 7)
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- Answer is 8
2^1=2
2^2=4
2^3=8
2^4=16
2^5=32
2^6=64
since unit digit repeat after 4th power.
hence 51/4=get reminder 3.
therefore answer is 2^3=8. - 10 years agoHelpfull: Yes(23) No(0)
- 2^1=2
2^2=4
2^3=8
2^4=16
2^5=32
2^6=64
repeated pattern of last digit=2,4,6,8,2,4,6,8,.......
51/4 remiander 3
so
2^51=2^3=8
- 10 years agoHelpfull: Yes(3) No(1)
- Answer is 8
- 10 years agoHelpfull: Yes(2) No(1)
- Answer is 8
- 10 years agoHelpfull: Yes(1) No(1)
- as the unit digit repeat after every 4th power.
so 51/4=get reminder 3.
therefore answer is 2^3=8.
- 10 years agoHelpfull: Yes(1) No(0)
- (2^4)^12*2^3= 2^3= 8
- 10 years agoHelpfull: Yes(0) No(0)
- 2
because the unit digit of the number will be the ans and here it is 2 - 8 years agoHelpfull: Yes(0) No(2)
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