Areas | Mathematics Mcqs

The side of a rhombus is 26 m and length of one of its diagonals is 20 m. The area of the rhombus is_______?

Byadmin July 15, 2019August 3, 2021

The side of a rhombus is 26 m and length of one of its diagonals is 20 m. The area of the rhombus is_______?

A. 529 sq m
B. 240 sq m
C. 260 sq m
D. 480 sq m

Explanation:
262 – 102 = 242
d1 = 20 d2 = 48
1/2 * 20 * 48 = 480

Mathematics Mcqs | Profit and Loss Mcqs

On selling 17 balls at Rs. 720, there is a loss equal to the cost price of 5 balls. The cost price of a ball is:________?

On selling 17 balls at Rs. 720, there is a loss equal to the cost price of 5 balls. The cost price of a ball is:________?

A. Rs. 45
B. Rs. 50
C. Rs. 55
D. Rs. 60

Read More On selling 17 balls at Rs. 720, there is a loss equal to the cost price of 5 balls. The cost price of a ball is:________?
Mathematics Mcqs | Quadratic Equations

If a and b are the roots of the equation x2 – 9x + 20 = 0, find the value of a2 + b2 + ab?

If a and b are the roots of the equation x2 – 9x + 20 = 0, find the value of a2 + b2 + ab?

A. -21
B. 1
C. 61
D. 21
Explanation:
a2 + b2 + ab = a2 + b2 + 2ab – ab
i.e., (a + b)2 – ab
from x2 – 9x + 20 = 0, we have
a + b = 9 and ab = 20. Hence the value of required expression (9)2 – 20 = 61.

Read More If a and b are the roots of the equation x2 – 9x + 20 = 0, find the value of a2 + b2 + ab?
Mathematics Mcqs | Problems on L.C.M and H.C.F

A room is 4 meters 37 cm long and 3 meters 23cm broad. It is required to pave the floor with minimum square slabs. Find the number of slabs required for this purpose?

A room is 4 meters 37 cm long and 3 meters 23cm broad. It is required to pave the floor with minimum square slabs. Find the number of slabs required for this purpose?

A. 485
B. 431
C. 391
D. 381
Explanation:
HCF of 323, 437 = 19
323 * 437 = 19 * 19 * x
x = 391

Read More A room is 4 meters 37 cm long and 3 meters 23cm broad. It is required to pave the floor with minimum square slabs. Find the number of slabs required for this purpose?
Mathematics Mcqs | Profit and Loss Mcqs

A person bought an article and sold it at a loss of 10%. If he had bought it for 20% less and sold it for Rs.75 less, he could have gained 25%. What is the cost price?

A person bought an article and sold it at a loss of 10%. If he had bought it for 20% less and sold it for Rs.75 less, he could have gained 25%. What is the cost price?

A. Rs.250
B. Rs.225
C. Rs.275
D. Rs.200
Explanation:
CP1 = 100 SP1 = 90
CP2 = 80 SP2 = 80 * (140/100) = 112
22 —– 100
55 —– ? => Rs.250

Read More A person bought an article and sold it at a loss of 10%. If he had bought it for 20% less and sold it for Rs.75 less, he could have gained 25%. What is the cost price?
Mathematics Mcqs | Probability

If a card is drawn from a well shuffled pack of cards, the probability of drawing a spade or a king is__________?

If a card is drawn from a well shuffled pack of cards, the probability of drawing a spade or a king is__________?

A. 19/52
B. 17/52
C. 5/13
D. 4/13
Explanation:
P(SᴜK) = P(S) + P(K) – P(S∩K), where S denotes spade and K denotes king.
P(SᴜK) = 13/52 + 4/52 – 1/52 = 4/13

Read More If a card is drawn from a well shuffled pack of cards, the probability of drawing a spade or a king is__________?
Mathematics Mcqs | Simplification and Approximation

6 of 5/8 / 5/8 – 1/8 = ______?

6 of 5/8 / 5/8 – 1/8 = ______?

A. 6 1/8
B. 5 3/4
C. 6 3/4
D. 5 7/8
Explanation:
6 of 5/8 / 5/8 – 1/8
30/8 * 8/5 – 1/8 = 6 – 1/8 = 5 7/8

Read More 6 of 5/8 / 5/8 – 1/8 = ______?

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