Q. If the Product of two mutually prime positive integer be x, then their L.C.M. is equal to -
1) x2
2) x/2
3) 1
4) x
Q. The difference between a discount of 40% on Rs. 5,000 and two successive discounts of 36% and 4% on the same amount is
1) Rs.72
2) Rs.27
3) Rs.0
4) Rs.20
Q. If x is 25% of y and y is 50% of z then x:z is
1) 3:4
2) 3:8
3) 1:2
4) 1:8
Q. The average of five consecutive numbers is 61. What is the average of last three consecutive numbers?
1) 61
2) 60
3) 62
4) 59
Q. The average weight of 8 men is diminished by 2.5 kg when one of them, who weight 77kg, is replaced by a new man. The weight of the new man is (in kg)
1) 67
2) 57
3) 72
4) 55
Q. If a+b = 1 and a3+b3+3ab=k, then the value of k is
1) 1
2) 3
3) 5
4) 7
Q. If a = x+y, b = x-y, c = x+2y, then a2+b2+c2-ab-bc-ca is
1) 4y2
2) 5y2
3) 6y2
4) 7y2
Q. The graphs of the equations 25x + 75y = 225 and x = 9 meet at the point
1) (0, 9)
2) (9, 0)
3) (3, 0)
4) (0, 3)
Q. The perimeter of a semicircular path is 36m. find the area of this semicircular path.
1) 42 sq. m
2) 54 sq. m
3) 63 sq. m
4) 77 sq. m
Q. The ratio of sides of triangle is 3 : 4 : 5 and area of the triangle is 72 square unit. Then the area of an equilateral triangle whose perimeter is same as that of the previous triangle is
1) 32√3 square unit
2) 48√3 square unit
3) 96 square unit
4) 60√3 square unit
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