Answers

2016-01-26T21:11:27+05:30
The correct answer is 501 where a=25 and b=5

(25-5)25+5-4 = 20 X 25 + 5 - 4 = 500 + 5 - 4 = 501
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2016-01-26T21:15:49+05:30
If we take a=25 and b=5 then,
ab=125

(25-5)25+5-4 = 20 X 24 = 520
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i think 20 X 24 = 480 and 520 = 20 X 26
sorry!
it was 26 not 24
but according to bodmas you should first multiply then add or subtract
you can check it on google calculator