Answers

2015-01-23T16:51:16+05:30
The number is 24 . 2*4 is 8 . 24 +18 is 42
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2015-01-23T19:15:49+05:30
The answer will be 
42 as we multiply the number we get 8 and when we add 18 to it it get reversed....
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the no is 24.as 2 and 4 makes 8.nothing other than this can make 8.8*1 can but when 18 is added it is not reversed.then 24-2*4=8;24+18=42.(simple)....