Math Puzzle 29
This math puzzle 29 is on intersection, perpendicular lines,fraction, LCM etc.
1) The point of intersection of the lines x + 2y = 4 and 3x + 6y = 7 is
A. (3,1/2)
B. (1/3,1)
C. (1,2)
D. (3,6)
E. Never meet
2) In how many ways can 5 people occupy 5 seats in a train?
A. 20
B. 25
C. 120
D. 125
E. 625
3) If x = 272/3 ,y = 251/2 , z = 641/3 , which has the largest value?
A. x
B. y
C. z
D. y, z
E. x, y
4) Which of the following is arranged in ascending order?
I 1/2, 1/3, 1/4, 1/5
II 4/5, 3/4, 2/3, ½
III 1/2, 2/3, 3/4, 4/5
IV 1/4, 1/3, 1/5, 1/2
A. I
B. II
C. III
D. IV
E. None of these
5) A solid cylinder has its radius equal to its height. What is the ratio of the area of the 2 ends to its curved surface area?
A. 1:2
B. 1:1
C. 2:1
D. 1:2π
E. 2π:1
6) Three bells ring at intervals of 3 seconds, 5 seconds and 8 seconds respectively. If they start ringing at the same time, how many times would all the three bells have rung before they ring together again?
A. 8
B. 11
C. 13
D. 16
E. 79
7) Which point on the x-axis is equidistant from (5, 4) and (-2, 3)?
A. (0, 2)
B. (2, 0)
C. (-2, 0)
D. (0, -2)
E. (10, 4)
8) Which of the following pair of lines are perpendicular to each other?
I x-2y+10=0 and x-2y+14=0
II 3x+y+8=0 and x+3y+12=0
III 3x-y+8=0 and x+3y+12=0
A. I
B. II
C. III
D. II & III
E. Cannot be determined
9) A train starts at a speed of 120 miles/hour, and reduces speed for every 1/2 hour by 20 miles/hour for the next 3 hours. How far does it traves in 3 hours?
A. 150
B. 210
C. 300
D. 360
E. 420
10)Car A covers a distance of 5 miles in 3 minutes, car B travels 9 miles in 6 minutes, car C travels 12 miles in 15 minutes. How fast is car A compared to car B (in percentage terms?
A. 10
B. 11.11
C. 42
D. 48
E. 52
Math puzzle 29
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