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Mathematics Mcqs

A cistern of capacity 8000 litres measures externally 3.3 m by 2.6 m by 1.1 m and its walls are 5 cm thick. The thickness of the bottom is__________?

Mathematics Mcqs, Volumes /
A cistern of capacity 8000 litres measures externally 3.3 m by 2.6 m by 1.1 m and its walls are 5 cm thick. The thickness of the bottom is__________?

A. 90 cm
B. 1 dm
C. 1 m
D. 1.1 cm

A cistern of capacity 8000 litres measures externally 3.3 m by 2.6 m by 1.1 m and its walls are 5 cm thick. The thickness of the bottom is__________? Read More »

Mathematics Mcqs, Volumes

A large cube is formed from the material obtained by melting three smaller cubes of 3, 4 and 5 cm side. What is the ratio of the total surface areas of the smaller cubes and the large cube?

Mathematics Mcqs, Volumes /
A large cube is formed from the material obtained by melting three smaller cubes of 3, 4 and 5 cm side. What is the ratio of the total surface areas of the smaller cubes and the large cube?

A. 2 : 1
B. 3 : 2
C. 25 : 18
D. 27 : 20

A large cube is formed from the material obtained by melting three smaller cubes of 3, 4 and 5 cm side. What is the ratio of the total surface areas of the smaller cubes and the large cube? Read More »

Mathematics Mcqs, Volumes

In a drawer there are 4 white socks, 3 blue socks and 5 grey socks. Two socks are picked randomly. What is the possibility that both the socks are of same color?

Mathematics Mcqs, Probability /
In a drawer there are 4 white socks, 3 blue socks and 5 grey socks. Two socks are picked randomly. What is the possibility that both the socks are of same color?

A. 4/11
B. 1
C. 2/33
D. 19/66

In a drawer there are 4 white socks, 3 blue socks and 5 grey socks. Two socks are picked randomly. What is the possibility that both the socks are of same color? Read More »

Mathematics Mcqs, Probability

From a pack of cards two cards are drawn one after the other, with replacement. The probability that the first is a red card and the second is a king is_________?

Mathematics Mcqs, Probability /
From a pack of cards two cards are drawn one after the other, with replacement. The probability that the first is a red card and the second is a king is_________?

A. 1/26
B. 3/52
C. 15/26
D. 11/26
Explanation:
Let E1 be the event of drawing a red card.
Let E2 be the event of drawing a king .
P(E1 ∩ E2) = P(E1) . P(E2)
(As E1 and E2 are independent)
= 1/2 * 1/13 = 1/26

From a pack of cards two cards are drawn one after the other, with replacement. The probability that the first is a red card and the second is a king is_________? Read More »

Mathematics Mcqs, Probability