What is the area of a square field whose diagonal of length 20 m?
What is the area of a square field whose diagonal of length 20 m?
A. 300 sq m
B. 250 sq m
C. 200 sq m
D. 400 sq m
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A cloth merchant has announced 25% rebate in prices. If one needs to have a rebate of Rs. 40. Then how many shirts each costing Rs.32 he should purchase?
A cloth merchant has announced 25% rebate in prices. If one needs to have a rebate of Rs. 40. Then how many shirts each costing Rs.32 he should purchase?A. 6
B. 5
C. 10
D. 7
Explanation:
The number of shirts = X
Rebate = (25/100 × 32 X) = 8X
8X = 40 or X = 5The sum of squares of three numbers is 280. If the numbers are in the ratio 3:5:6, find the greatest number.
The sum of squares of three numbers is 280. If the numbers are in the ratio 3:5:6, find the greatest number.A. 8
B. 6
C. 12
D. 18
Let the numbers be 3x,5x and 6x. (3x)²+(5x)²+(6x)²=280 9x²+25x²+36x²=280 70x²=280 x²=4 x=2 The greatest number is 6x=12.The curved surface area of a cylindrical pillar is 264 m2 and its volume is 924 m3. Find the ratio of its diameter to its height.
The curved surface area of a cylindrical pillar is 264 m2 and its volume is 924 m3. Find the ratio of its diameter to its height.A. 3 : 7
B. 7 : 3
C. 6 : 7
D. 7 : 6Three taps A, B and C can fill a tank in 12, 15 and 20 hours respectively. If A is open all the time and B and C are open for one hour each alternately, the tank will be full in_________?
Three taps A, B and C can fill a tank in 12, 15 and 20 hours respectively. If A is open all the time and B and C are open for one hour each alternately, the tank will be full in_________?A. 6 hours
B. 6 2/3 hours
C. 7 hours
D. 7 1/2 hoursIn how many different ways can six players be arranged in a line such that two of them, Asim and Raheem are never together?
In how many different ways can six players be arranged in a line such that two of them, Asim and Raheem are never together?A. 120
B. 240
C. 360
D. 480
Explanation:
1. As there are six players, So total ways in which they can be arranged = 6!ways =720.
A number of ways in which Asim and Raheem are together = 5!x2 = 240.
Therefore, Number of ways when they don’t remain together = 720 -240 =480.The product of the area of three adjacent faces of a rectangular box is equal to___________?
The product of the area of three adjacent faces of a rectangular box is equal to___________?A. the volume of the box
B. Twice the volume of the box
C. the square of the volume of the box
D. Cube root of the volume of the box
Product of area of 3 adjacent faces =(lb x bh x lh)
=(l2 b2 h2) =V2