Two pipes P and Q can fill a tank in 20hrs and 25hrs respectively while a third pipe R can empty the tank in 30hrs. If all the pipes are opened together for 10hrs and then pipe R is closed then in what time the tank can be filled.

QA 2019 MCQ

A bag contains 4 blue, 5 white and 6 green balls. Two balls are drawn at random. What is the probability that one ball is white?

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QA 2019 MCQ

Given ratio are a : b = 2 : 3, b : c = 5 : 2, c : d = 1 : 4. Find a : b : c.

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QA 2019 MCQ

A line from center to circumference of a circle is known as:

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QA 2019 MCQ

If there are Rs 495 in a bag in denominations of one-rupee, 50 paisa and 25 paisa coins, which are in the ratio 1 : 8 : 16. How many 50 paisa coins are there in the bag?

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QA 2019 MCQ

Given \(A = 2^{65}\) and \(B = (2^{64} + 2^{63} + 2^{62} + ... + 2^0)\), which of the following is true?

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QA 2019 MCQ

What decimal of an hour is a second?

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QA 2019 MCQ

The sum of third and ninth term of an A.P is 8. Find the sum of the first 11 terms of the progression.

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QA 2019 MCQ

What will be vulgar fraction of 0.0056?

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