1) Batsman Babu faced equal number of balls in first 11 matches he played in the tournament and last 11 matches he played in the tournament. If his strike rate in first 11 matches and last 11 matches of the tournament are 83 and 71 respectively, what is the total number of balls faced by him in the tournament?

2) A contractor undertook to complete a project in 90 days and employed 60 men on it. After 60 days, he found that 3/4 of the work has already been completed. How many men can he discharge so that the project may be completed exactly on time?

3) A and B entered into partnership with Rs 700 and Rs 600 respectively. After 3 months A withdrew 2/7 of his stock but after 3 months more he put back 3/5 of what he had withdrawn. The profits at the end of the year are Rs 726, how much of this should A receive?

4) In an examination the percentage of students qualified to the number of students appeared from school ‘A’ is 60%. In school ‘B’ the number of students appeared is 30% more than the students appeared from school ‘A’ and the number of students qualified from school ‘B’ is 60% more than the students qualified from school ‘A’. What is the percentage of students qualified to the number of students appeared from school ‘B’?

5) Parameshwaran invested an amount of Rs 12000 at the simple interest rate of 10 per cent annum and another amount at the simple interest rate of 20 per cent per annum. The total interest earned at the end of one year on the total amount invested became 14 per cent per annum. Find the total amount invested.

6) 3, 37, 285, 1749, 8797, ?

7) 736, 1248, 1591, 1807, ?

8) 16, 49, 345, 3798, ?