In the following series, one letter is missing as shown by the question mark. Select the missing letter from the given options.

E, J, O, T, ?

A pipe, working at full speed, can fill an empty cistern in 1 hour. However, during the first hour it worked at one-twelfth of its capacity, during the second hour at one-ninth of its capacity, during the third hour at one-sixth of its usual capacity and during the fifth hour it was only one -third as efficient as it was supposed to be. A second pipe also displayed similar performance, but if it worked at full speed would have filled the empty cistern in 2 hours. Together with a drain pipe that drained water out of the tank at a constant rate, the empty cistern could be filled in 5 hours, all the three pipes working concurrently. How many hours will it take the drain pipe to empty the filled cistern if no other pipe was functioning during the time?

Which of the following compounds has a double bond?

Where did the Indian Independence League form in 1907?

By selling 33 m clothes, a person gains cost price of 11 m clothes. Find the gain %.

The average of 5 consecutive numbers is 50%, then difference between 'product of largest and smallest number' with 'product of fourth and second number' is

Which of the following is graphics solution for word processors?

The FROM SQL clause is used to