1. A hemisphere, a cylinder and a cone stand on the same base and have the same height. Then find the ratio of their volumes respectively? (1)
- (1) 1 : 2 : 3
- (2) 3 : 2 : 1
- (3) 2 : 3 : 1
- (4) 2 : 1 : 3
- (5) None of these
2. 1/3rd of a tank is filled with milk. After taking out 8 litres of milk 1/4th of the is still filled. Find the capacity of the tank? (in litre) (2)
- (1) 84 litre
- (2) 96 litre
- (3) 156 litre
- (4) 80 litre
- (5) None of these
3. If the ratio of heights and radius of two cones are respectively 2 : 7 and 4 : 3, the ratio of their volume is ? (2)
- (1) 35 : 63
- (2) 32 : 63
- (3) 63 : 32
- (4) 3 : 49
- (5) None of these
4. If 27 is subtracted from a number then it is reduced to 40% of its original. The 1/3rd of the number is? (1)
- (1) 45
- (2) 30
- (3) 60
- (4) 75
- (5) None of these
5. In a mixture of 90 litres, the ratio of milk and water is 4 : 2. How much water should be added to the mixture so that the ratio of milk and water becomes 6 : 4 ? (2)
- (1) 50
- (2) 10
- (3) 40
- (4) 20
- (5) None of these