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. [Q-11]If X^Y denotes X raised to the power of Y, find out last two
digits of (2957^3661)+(3081^3643)
Options
o 42
o 38
o 98
o 22
Read Solution (Total 11)
-
- 98 is the ans
7^1 is 7
and
5*1=5
so last to digit of (2957^3661) is 57
same for
1^3 is 1
8*3=24 unit digit of 24 is 4
last 2 digit of(3081^3643) is 41
41+57=98.... - 12 years agoHelpfull: Yes(46) No(7)
- my answer is comng out to b 98. pls reply if is correct..?
- 12 years agoHelpfull: Yes(14) No(1)
- 98 is correct
- 12 years agoHelpfull: Yes(6) No(0)
- i think 98
- 12 years agoHelpfull: Yes(5) No(2)
- 98 is correct.
- 12 years agoHelpfull: Yes(3) No(2)
- ya 98 nly...
- 12 years agoHelpfull: Yes(2) No(1)
- ans is 98...
- 12 years agoHelpfull: Yes(2) No(1)
- 12345.....424344 = (1234...424290) + (54)(hint:last 4 digits 4290+54=4344).
first part we take 123456........424290(in this last digit should be 0 so it can divisible by 5,and also divisible by 9)so it can divisible by 45.
second part 54 divide by 45 we get remainder 9 so answer is 9 - 12 years agoHelpfull: Yes(1) No(15)
- answer is 22.
- 12 years agoHelpfull: Yes(1) No(12)
- 8 will be last digit
reason: 7^4 will give last digit 1 so 1st expression will be 2957^4^739 *2957=last digit will be 1*7
similarly last digit of 2nd expression is 1 hence 7+1=8;
for 2nd last digit 5+4=9
- 12 years agoHelpfull: Yes(1) No(5)
- sol:(2957)^(3661) => 7^1=7
5*1=5
=>last to num of this is 57
same way 3081^3643 => 1^3=1
8*3=24
=> 241
sum of last to num => 41+57=98 :)
- 12 years agoHelpfull: Yes(1) No(0)
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