The diagram below shows number of students who got distinction in three subjects out of 500. What is the percentage of students who got distinction in two subjects? 
Consider the following:
Which of the following matches is correct ?
If '@' means ‘×’, ‘C’ means ‘+’, ‘%' means ‘+’ and ‘$’ means ‘−’, then what is the value of
6%12C3@8$3?
Which number will come at the place of E in the given pattern? 
A sum of Rs. 800 amounts to Rs. 920 in 3 years at simple interest. What would be the amount, if the interest rate is increased by 3%?
In what ratio must water be mixed with milk to gain 20% by selling the mixture at cost price?