Q. A sold his watch for Rs.190, thus losing 5%. What was the cost price of the watch?
1) Rs. 237.5
2) Rs. 220
3) Rs. 200
4) None of these
Q. If the side of a cube is decreased by 10%, the percentage decrease in the volume of the cube is -
1) 72.9%
2) 10%
3) 19%
4) 27.1%
Q. If a brass cone of radius 10 cms and height 10 cms is melted and cast into a sphere, the radius of the cast sphere is likely to be closet to -
1) 6.3 cms
2) 8.2 cms
3) 7.1 cms
4) 5.7 cms
Q. A photograph has to be taken by the management committee. There are seven chairs. The center chair can only be occupied by the president and the left extreme chair by the secretary. In how many combinations can the photograph be taken -
1) 70
2) 5040
3) 120
4) 625
Q. A committee of 5 members is to be selected from 6 men and 5 women. What is the number of ways of selecting a committee which have at least one man and one woman -
1) 445
2) 455
3) 470
4) 130
Q. Two perpendicular crossroads of equal width run through the middle of a rectangular field of length 80 meters, and breadth 60 meters. If the area of the crossroads is 675 m2, what is the width of the road?
1) 6 metres
2) 5 metres
3) 9 metres
4) None of these
Q. Two circular metallic discs have a thickness of 15 mm. Their areas are in the ratio of 9:1. The smaller dia disc is pressed against the bigger disc and rotated around it on a flat surface. How many times will the small disc rotate before it completes one circle of the bigger disc?
1) 3
2) 3 π
3) π
4) None of these
Q. If the perimeter of the rectangular garden is 1200 meters and the ratio of width to length is 3:5 then its length in meters will be -
1) 325
2) 350
3) 375
4) None of these
Q. In a castle, there is the provision of food for 150 men for 50 days. After 20 days 50 men leave the castle. The remaining food will last for -
1) 40 days
2) 45 days
3) 42 days
4) 50 days
Q. The average score of three boys in mathematics is 30. When the score of a fourth boy is added to the total score of the three boys, the average is lowered to 25. What is the score of the fourth boy?
1) 10
2) 15
3) 20
4) 25
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