Mathematics MCQs

1767 MCQs  (Page 144 of 177)

Attempt Mathematics MCQs Quiz
If a number is chosen at random from the set {1, 2, 3, …., 100}, then the probability that the chosen number is a perfect cube is___________?
A. 1/25
B. 1/2
C. 4/13
D. 1/10
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Out of first 20 natural numbers, one number is selected at random. The probability that it is either an even number or a prime number is_____________?
A. 1/2
B. 16/19
C. 4/5
D. 17/20
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If two dice are thrown together, the probability of getting an even number on one die and an odd number on the other is__________?
A. 1/4
B. 1/2
C. 3/4
D. 3/5
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If four coins are tossed, the probability of getting two heads and two tails is__________?
A. 3/8
B. 6/11
C. 2/5
D. 4/5
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A large tanker can be filled by two pipes A and B in 60 minutes and 40 minutes respectively. How many minutes will it take to fill the tanker from empty state if B is used for half the time and A and B fill it together for the other half?
A. 15 min
B. 20 min
C. 27.5 min
D. 30 min
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A tap can fill a tank in 6 hours. After half the tank is filled, three more similar taps are opened. What is the total time taken to fill the tank completely?
A. 3 hrs 15 min
B. 3 hrs 45 min
C. 4 hrs
D. 4 hrs 15 min
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A cistern can be filled by a tap in 4 hours while it can be emptied by another tap in 9 hours. If both the taps are opened simultaneously, then after how much time will the cistern get filled?
A. 4.5 hrs
B. 5 hrs
C. 6.5 hrs
D. 7.2 hrs
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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 hours
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The probability that a number selected at random from the first 50 natural numbers is a composite number is__________?
A. 21/25
B. 17/25
C. 4/25
D. 8/25
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A top can fill a cistern in 8 hours and another can empty it in 16 hours. If both the taps are opened simultaneously the time (in hours) to fill the tank is
A. 8
B. 10
C. 16
D. 24
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Word of the Day
20 Jul
Abundance
a very large quantity of something.
بہتات، زیادہ، فراوانی، کثرت

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