A boy in a train notices that he can count 31 telephone posts in 60 seconds. the distance between two posts is 60 meters. Calculate the speed of the train?
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If '<' stands for '-', '>' stands for 'x' and '@' stands for '/' then what will be the value of 27 > 81 @ 9 < 6
If 'W' means 'x', 'X' means '-', 'Y' means '+' and 'Z' means '/', then 28 Z 7 W 8 X 6 Y 4 = ?
In most green plants, chloroplasts are
Fats, oils and cholesterol are all types of what?
In accordance to the 18th Mercer Quality of Life study, which city in the World holds the first position as the best city to live in?
Mohan earns a profit of 20% on selling a jean at 15% discount on printed price. The ratio of the cost price to printed price of the jean is
The mean of a distribution is 21 and the standard deviation is 7. What is the value of the coefficient variation?