A bag has Rs.51.25 in the form of 2-rupee, 50-paise and 25-paise coins in the ratio of 3:5:7. What is the total number of 50-paise coins?

The cost price of an article is x. It is marked up by 150%. It is sold at Rs 600 after giving 40% discount. What is x (in Rs)?

What is the area (in sq cm) of a circle whose circumference is 22 cm?

Anil is twice as good as workman as Bimal and together they finish a piece of work in 9 days. In how many days will Anil alone finish the work?

Convert decimal 99 to binary.

Which is the only train which runs between Kolkata and Dhaka?

In April 2017, the G20 Digital Ministerial Meeting on Digital Economy was held in which country?

Which of the statements given below are not correct?

1. The author of the novel 'A Visit from the Goon Squad' is Edward P Jones.
2. The author of the novel 'The Corrections' is Jonathan Franzen.
3. The author of the novel 'The Known World' is Jennifer Egan.