Which of the following fraction is the smallest ?

A man spends (1/7)th of his salary on food, half of the remaining on clothing and (1/3)rd of the remaining on entertainment. He is still left with Rs. 600. How much does he spend on entertainment ?

A boy on being asked 13/14 of a certain fraction had made the mistake of dividing the fraction by 14/13 and so got an answer that exceeded the correct answer by 3/65. The correct fraction is ?

The greatest fraction out of 2/5, 5/6, 11/12 and 7/8 is ?

[(3.537 - .948)² + (3.537 + .948)²] / [(3.537)² + (.948)²] = ?

(0.16)² - (0.12)² = ?

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