Mathematical Series Questions for Competitive Exams
(A) 15:19
(B) 13:15
(C) 16:19
(D) 17:19
Correct Answer : C
(A) 10
(B) 9
(C) 12
(D) 7
(E) None of these
Correct Answer : C
(A) 45
(B) 25
(C) 35
(D) 40
Correct Answer : C
(A) 12 Years
(B) 8 Years
(C) 10 Years
(D) 14 Years
(E) None of these
Correct Answer : A
(A) 25
(B) 40
(C) 35
(D) 15
Correct Answer : B
12 pumps working 6 hours a day can empty a completely filled reservoir in 15 days. How many such pumps working 9 hours a day will empty the same reservoir in 12 days?
(A) 15
(B) 9
(C) 10
(D) 12
Correct Answer : C
Three pipes A, B and C can fill a cistern in 10 hours, 12 hours and 15 hours respectively. First A was opened. After 2 hour, B was opened and after 4 hours from the start of A, C was also opened. Find the time in which the cistern is just full.
(A) 2 hours
(B) 4 hours
(C) 2 hours 52 min
(D) 5 hours 44 min.
(E) None of these
Correct Answer : D
A tap takes 36 hours extra to fill a tank due to leakage equivalent to half of its inflow. The inflow can fill the tank in how many hours?
(A) 36 hours
(B) 24 hours
(C) 30 hours
(D) 18 hours
Correct Answer : A
A tap can fill a Tank in 16 hours. Due to a hole in its base it is filled in 24 hours, If tank is full then in how many hours it will be empty through the hole.
(A) 40
(B) 36
(C) 45
(D) 48
Correct Answer : D
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) 4 hrs
(B) 4 hrs15 min
(C) 3 hrs 15 min
(D) 3 hrs 45 min
Correct Answer : D
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Vikram Singh
Providing knowledgable questions of Reasoning and Aptitude for the competitive exams.
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