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Mathematical Skills Practise Tests


1.
In a certain school, 20% of students are below 8 years of age. The number of students above 8 years of age is 2/3 of the number of students of 8 years of age which is 48. What is the total number of students in the school?
1. 63
2. 100
3. 110
4. 140
5. none of these



2.
If A={1,2,3}, then the number of equivalane relation containing (1,2) is
1. 1
2. 2
3. 3
4. 8
5. none of the above



3.
A train traveling at 100 kmph overtakes a motorbike traveling at 64 kmph in 40 seconds. What is the length of the train in meters?
1. 1777 meters
2. 1822 meters
3. 400 meters
4. 1400 meters
5. none of the above



4.
Two persons A and B 81 miles apart from each other, start traveling towards each other at the same time. If 'A' covers 5 miles per hour to the B's 4 miles per hour, how far will B have traveled when they meet?
1. 29
2. 34
3. 36
4. 52
5. none of these



5.
Which of the following statements is FALSE?
1. {2,3,4} ⊆A implies that 2∈A and {3,4} ⊆A.
2. {2,3,4} ∈A and {2,3} ∈B implies that{4} ⊆A?B
3. AB⊇ {2,3,4}implies that{2,3,4} ⊆A and {2,3,4} ⊆B.
4. A?B⊇ {3,4} and {1,2} ⊆B implies that {1,2,3,4} ⊆A∪ B
5. none of these