1
GATE CSE 2021 Set 1
MCQ (Single Correct Answer)
+2
-0.67
There are five bags each containing identical sets of ten distinct chocolates. One chocolate is picked from each bag.

The probability that at least two chocolates are identical is ________.
A
0.6976
B
0.3024
C
0.4235
D
0.8125
2
GATE CSE 2021 Set 1
MCQ (Single Correct Answer)
+2
-0.67
We have 2 rectangular sheets of paper, M and N, of dimensions 6 cm $$\times$$ 1 cm each. Sheet M is rolled to form an open cylinder by bringing the short edges of the sheet together. Sheet N is cut into equal square patches and assembled to form the largest possible closed cube. Assuming the ends of the cylinder are closed, the ratio of the volume of the cylinder to that of the cube is _______.
A
$${9 \over \pi }$$
B
$$3\pi $$
C
$${\pi \over 2}$$
D
$${3 \over \pi }$$
3
GATE CSE 2021 Set 1
MCQ (Single Correct Answer)
+2
-0.67
Items Cost Profit% Marked price
P 5400 - 5860
Q - 25 10000

Details of prices of two items P and Q are presented in the above table. The ratio of cost of item P to cost of item Q is 3 : 4. Discount is calculated as the difference between the marked price and the selling price. The profit percentage is calculated as the ratio of the difference between selling price and cost, to the cost

(Profit% = $${{Selling\,price - Cost} \over {Cost}} \times 100$$).

The discount on item Q, as a percentage of its marked price, is ________.
A
25
B
10
C
5
D
12.5
4
GATE CSE 2020
MCQ (Single Correct Answer)
+2
-0.67
Two straight lines are drawn perpendicular to each other in X-Y plane. If $$\alpha $$ and $$\beta $$ are the acute angles the straight lines make with the X-axis, then $$\alpha $$ + $$\beta $$ is ______.
A
60o
B
90o
C
120o
D
180o
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