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A person ordered 5 pairs of black socks and some pairs of brown socks. The price of a black pair was thrice that of a brown pair while preparing the bill the bill clerk inter-changed the number of bla

Shopkeeper paid $80 each for two pair of shoes. He sell first pair of shoes making profit of 35% of cost price. He sell second pair of shoes at loss of 18% of cost price. selling price of each pair of

A can complete a piece of work in 4 days. B takes double the time taken by A, C takes double that of B, and D takes double that of C to complete the same task. They are paired in groups of two each. O

There are two pair of galaxies X & Y and A & B. The distance between the galaxies in the pair is higher in A & B. Which of these two pair,the members will be moving away from each other with higher sp

Point P in Cartesian plane is located by an ordered pair called

Set consisting of all second elements of each ordered pair in relation is called

Set consisting of all first elements of each ordered pair in relation is called