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Numerical Ability
Number System
what is unit digit of ((31)^431)^1034?
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- last digit is 1
so unit digit is always 1 - 9 years agoHelpfull: Yes(16) No(0)
- Last digit i.e units digit was 1.
- 9 years agoHelpfull: Yes(2) No(0)
- when we multiply 31*31 we get in units digit value=1
again when we multiply the number which contains in unit digit 1 1034 times we get always 1 in unit digit - 9 years agoHelpfull: Yes(2) No(0)
- Ans is 191,263,347
- 9 years agoHelpfull: Yes(2) No(0)
- (a^m)^n=(a^mn) then (31)^431*1034
there in power we have 4 in the unit place.
and (31)^---4 so (1)^4 so the answer is 1. - 9 years agoHelpfull: Yes(1) No(2)
- unit digit is 1
- 9 years agoHelpfull: Yes(0) No(0)
- ans is 1. any power raised to 1 is always 1
- 9 years agoHelpfull: Yes(0) No(0)
- Solve like this:
1034%4=43
431 * 2=862%10=2
2%4=2
So,31^2=gives unit digit 1 - 9 years agoHelpfull: Yes(0) No(0)
- last digit = 1 So unit digit will be 1. As we know 0,1,5,6 , whenever this digits are in unit place, whatever be the power, the unit place will be the same digit. Always remember this concept.
- 9 years agoHelpfull: Yes(0) No(0)
- last digit is 1 ..so ans will be 1
- 8 years agoHelpfull: Yes(0) No(0)
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