Answers

2015-11-15T17:27:21+05:30
Answer:49
Whenever You raise 7 to a power 2 more than a number perfectly divisible by 10 the last 2 digits are 49.E-g-7^2,       7 ^{12} , 7 ^{122}

CONCEPT:
1.Remainder when 149 divided by 25 is 49. Because 100 is perfectly divisible by 25 
2.Remainder when 12241412349 divided by 25 is 49. Because 1241412300 is perfectly divisible by 25


 
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but it is not there in the options
13 ,24 ,18 ,17  are  the options
2015-11-15T18:49:28+05:30
Perhaps when u raise 7 to power more than a no. divisible by 10 then last 2 digits r 49

so ans is 49.........
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