1. Find out the wrong number in the series. 1, 3, 10, 21, 64, 129, 356, 777
2. A student divided a number by 2/3 when he required to multiply by 3/2. Calculate the percentage of error in his result.
3. A sum of Rs. 12,500 amounts to Rs. 15,500 in 4 years at the rate of simple interest. What is the rate of interest?
4. A tennis marker is trying to put together a team of four players for a tennis tournament out of seven available. males - a, b and c; females – m, n, o and p. All players are of equal ability and there must be at least two males in the 1 team. For a team of four, all players must be able to play with each other under the following restrictions: b should not play with m, c should not play with p, and a should not play with o. Which of the following statements must be false?
5. In a class composed of x girls and y boys what part of the class is composed of girls
6. A metallic sheet is of rectangular shape with dimensions 48 m x 36 m. From each of its corners, a square is cut off so as to make an open box. If the length of the square is 8 m, the volume of the box (in m3) is:
7. If the wheel of a bicycle makes 560 revolutions in travelling 1.1 km, what is its radius?
8. All men are vertebrates. Some mammals are vertebrates. Which of the following conclusions drawn from the above statement is correct.
9. If a light flashes every 6 seconds, how many times will it flash in ¾ of an hour?
10. In a mixture 60 litres, the ratio of milk and water 2 : 1. If the this ratio is to be 1 : 2, then the quanity of water to be further added is:
