1
GATE EE 2022
MCQ (Single Correct Answer)
+1
-0.33

Three bells P, Q and R are rung periodically in a school. P is rung every 20 minutes; Q is rung every 30 minutes and R is rung every 50 minutes. If all the three bells are rung at 12:00 P.M., when will the three bells ring together again the next time?

A
5:00 P.M.
B
5:30 P.M.
C
6:00 P.M.
D
6:30 P.M.
2
GATE EE 2022
MCQ (Single Correct Answer)
+1
-0.33

The figure below shows the front and rear view of a disc, which is shaded with identical patterns. The disc is flipped once with respect to any one of the fixed axes 1-1, 2-2 or 3-3 chosen uniformly at random. What is the probability that the disc DOES NOT retain the same front and rear views after the flipping operation?

GATE EE 2022 General Aptitude - Numerical Ability Question 17 English

A
0
B
$${1 \over 3}$$
C
$${2 \over 3}$$
D
1
3
GATE EE 2019
MCQ (Single Correct Answer)
+1
-0.33
It takes two hours for a person X to mow the lawn. Y can mow the same lawn in four hours. How long (in minutes) will it take X and Y, if they work together to mow the lawn?
A
120
B
90
C
60
D
80
4
GATE EE 2019
MCQ (Single Correct Answer)
+1
-0.33
The missing number in the given sequence 343, 1331, _______, 4913 is
A
3375
B
2744
C
2197
D
4096
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