Device used for the detection and measurement of all types of radiation (alpha, beta and gamma)-

Who discovered Nitrogen?

Marble is the metamorphosed form of

Who holds the power to increase the number of judges in the Supreme Court?

Simple interest on an amount is Rs. 24 and true discount on the same is Rs. 20. The principal amount is

If the profit on selling an article for Rs. 579 is the same as the loss on selling it for Rs. 337, then find the profit percent if its selling price is Rs. 687.

The average of x numbers is 48. If of the numbers are increased by 51 each and remaining are decreased by 71 each, then what is the new average?

$$ {4\over 5}×[{1\over 2}\ of\ 25]+12÷{3\over 4}-32=?$$