GRE
Exam
Numerical Ability
Number System
7 power 25 is divided by 4
Read Solution (Total 3)
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- 7^25 written as (8-1)^25
when divide by 4 remainder =(-1)^25=-1
so remainder=4-1=3 ans........ - 10 years agoHelpfull: Yes(2) No(2)
- euler of 4 is 2
so 7^2(12)/4 leaves remainder 1
thus 7/4 leaves remainder 3 - 10 years agoHelpfull: Yes(0) No(2)
- According to cyclic chain 7 has sequence 7,9,3,1
Divide 25 by 4 we get remainder as 1
so the unit place is 7
as R1= 7, R2 = 9 , R3 = 3, R4 OR R0 = 1
7/4 = 3 , THATS YOUR ANS..
- 10 years agoHelpfull: Yes(0) No(1)
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