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what will be da unit digit of 1122^1122!?
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- 1122! will end with a lot of zeros(which is divisible by 4)
and 1122^1,1122^2,1122^3,1122^4,1122^5
ends with 2,4,8,6,2 up to so on.
so the factorial value divided by 4. and the answer will be 6 - 11 years agoHelpfull: Yes(45) No(3)
- 1122^1122!=(2*561)^1122!
=>2^1122!*561^1122!
last two digits of 2^1122!=76 and last two digits of 561^1122!= 01
=> last two digits of 1122^1122! = 76*01=76 - 11 years agoHelpfull: Yes(14) No(1)
- when the question is in the form of x^y, and when the number ending with 2, divide the number y with 4 and replace it with the remainder you get.
11221/4=1(remainder)
(1122)^1 =2( we know that 2^1=2)
answer is 2 - 11 years agoHelpfull: Yes(7) No(19)
- unit digit is 2
11221 is multiple of 4 ,therefore it can written a 4*x
and 2^4=16
so 6 is the unit digit
- 11 years agoHelpfull: Yes(4) No(8)
- @jyothi.....as last digit is asked so see only last digit of 1122 which is 2
now cyclicity of 2 is 4.......
when we divide 1122! by 4 the remainder is 0....
therefore unit digit is 2^4=16....that is 6 - 11 years agoHelpfull: Yes(3) No(0)
- 1122^1122=(561*2)^1122
=(561^1122)*(2^1122)
=(unit digit-1)*(2^10^112)*2^2
=(unit digit-1)*(last digit-6)*4
=1*6*4
=last digit is 4 - 11 years agoHelpfull: Yes(2) No(8)
- am not getting the answer..? pls anyone explain it in easyway...
- 11 years agoHelpfull: Yes(1) No(1)
- 6
1122! is divisible by 4 so
- 11 years agoHelpfull: Yes(0) No(0)
- 00 divisible by 4, thus the unit digit will be 6 Ans.
- 11 years agoHelpfull: Yes(0) No(1)
- @JYOTHI AM: if you are not getting the answer then its my suggestion to go through chapter NUMBER SYSTEM from Arun sharma's quantitative aptitude
- 11 years agoHelpfull: Yes(0) No(0)
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