When the square of a natural number subtracted from its cube, the result is 48. Find the number: 

The average of 20 numbers is 32. If two numbers are 29 and 31, then what is the average of the remaining numbers (correct up to two decimals)? 

The cost price of an article is Rs x. It is marked up by 200%. It is sold at Rs. 540 after giving 25% discount. What is the value of x (in Rs)? 

Average of 11 number is 30. If the average of first 10 numbers is 22, then find the 11th number?

A man goes downstream with a boat to some destination and returns upstream to his original place in 5 hours. If the speed of the boat in still water and the stream are 10 km/hr and 4 km/hr respectively, the distance of the destination from the starting place is : 

If 2sin²θ–5sinθcosθ+7cos²θ=1then possible values of tan θ are

Directions : What will come in the place of the question mark (?) in the following number series?

16, ?, 8, 12, 24, 60

A shopkeeper earns a profit of 25 percent on selling a radio at 15 percent discount on the Printed price. Finds the ratio of the Printed price and the cost price of the radio.