Answers

2014-12-06T15:17:31+05:30
Probability of asking for petrol is 1/2.

Simple answer; cut down the use of petrol in all respect.
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2014-12-06T17:15:07+05:30
Probability for asking for petrol => 22/50 =>11/25
i don't think that question 2 has any relation with maths 
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