A triangle and a parallelogram are on the same base and between the same parallels. The ratio of the area of triangle and parallelogram is______. 

How many pairs of twin primes are there between the integers 1 to 100? 

Let x be the least number which when divided by 8, 12, 20, 28, 35 leaves a remainder 5 in each case. What is the sum of digits of x? 

A whole number is added to 50 and the same number is subtracted from 50. The sum of the resulting numbers is 

A dealer sells an article for ₹ 24 and gains as much percent as the price of the article , then the cost price of the article is: 

Twice the square of a number is three times the cube of other number. What is the ratio between the first number and the second number?