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.Management Sciences
Category: Mathematics Mcqs
A tank is filled by three pipes with uniform flow. The first two pipes operating simultaneously fill the tank in the same during which the tank is filled by the third pipe alone. The second pipe fills the tank 5 hours faster than the first pipe and 4 hours slower than the third pipe. The time required by the first pipe is?
A. 6 hrs
B. 10 hrs
C. 15 hrs
D. 30 hrs
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The perimeter of a semi circle is 144 cm then the radius is_________?
A. 25 cm
B. 28 cm
C. 30 cm
D. 35 cm
Surface area of a sphere is 2464 cm2. If its radius is doubled, then the surface area of _________?the new sphere will be
A. 4920 cm2
B. 4727 cm2
C. 9856 cm2
D. 19712 cm2
Find the least number of complete years in which a sum of money put out at 25% compound interest will be more than double of itself?
A. 6 years
B. 1 year
C. 2 years
D. 4 years
Three numbers are in the ratio of 3 : 4 : 6 and their product is 1944. The largest of these numbers is :___________?
A. 6
B. 12
C. 18
D. None of these
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The cost of 16 pens and 8 pencils is Rs.352 and the cost of 4 pens and 4 pencils is Rs.96. Find the cost of each pen?
A. Rs.32
B. Rs.28
C. Rs.36
D. Rs.25
E. None of these
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If the ratio of the areas of two squares is 9:1 ratio of their perimeters is_________?
A. 9:1
B. 3:1
C. 3:4
D. 1:3
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