Mathematics Mcqs | Problems on L.C.M and H.C.F

There are four prime numbers written in ascending order of magnitude. The product of the first three is 385 and of the last three is 1001. Find the fourth number?

Byadmin July 12, 2019August 4, 2021

There are four prime numbers written in ascending order of magnitude. The product of the first three is 385 and of the last three is 1001. Find the fourth number?

A. 5
B. 7
C. 11
D. 13

Mathematics Mcqs | Profit and Loss Mcqs

The ratio of the prices of three different types of cars is 4:5:7. If the difference between the costliest and the cheapest cars is Rs. 60000 the price of the car of modest price is:

The ratio of the prices of three different types of cars is 4:5:7. If the difference between the costliest and the cheapest cars is Rs. 60000 the price of the car of modest price is:

A. Rs. 80000
B. Rs. 100000
C. Rs. 140000
D. Rs. 120000
Explanation:
Let the prices be 4X, 5X and 7 X rupees
7X – 4X = 60000
=> X = 20000
Required price = 5X = Rs. 100000

Read More The ratio of the prices of three different types of cars is 4:5:7. If the difference between the costliest and the cheapest cars is Rs. 60000 the price of the car of modest price is:
Mathematics Mcqs | Time & Distance Mcqs

Two bikes start at the same time from two destination 300 km apart and travel towards each other. If they cross each other at a distance of 130 km from one of the destination, what is the ratio of their speeds?

Two bikes start at the same time from two destination 300 km apart and travel towards each other. If they cross each other at a distance of 130 km from one of the destination, what is the ratio of their speeds?

A. 17:13
B. 17:30
C. 13:30
D. None of these

Read More Two bikes start at the same time from two destination 300 km apart and travel towards each other. If they cross each other at a distance of 130 km from one of the destination, what is the ratio of their speeds?
Mathematics Mcqs | Simplification and Approximation

5 * 5 ÷ 5 + 5 ÷ 5 = __________?

5 * 5 ÷ 5 + 5 ÷ 5 = __________?

A. 3
B. 2
C. 4
D. 6
Explanation:
(5 * 5)/5 + 1/5 * 5 = 5 + 1 = 6

Read More 5 * 5 ÷ 5 + 5 ÷ 5 = __________?
Areas | Mathematics Mcqs

The perimeter of one square is 48 cm and that of another is 20 cm. Find the perimeter and the diagonal of a square which is equal in area to these two combined?

The perimeter of one square is 48 cm and that of another is 20 cm. Find the perimeter and the diagonal of a square which is equal in area to these two combined?

A. 15√2 cm
B. 13√2 cm
C. 16√2 cm
D. 17√2 cm

Read More The perimeter of one square is 48 cm and that of another is 20 cm. Find the perimeter and the diagonal of a square which is equal in area to these two combined?
Mathematics Mcqs | Permutations and Combinations

In how many ways can live boys and three girls sit in a row such that all boys sit together?

In how many ways can live boys and three girls sit in a row such that all boys sit together?

A. 4800
B. 5760
C. 2880
D. 15000
Explanation:
Treat all boys as one unit. Now there are four students and they can be arranged in 4! ways. Again five boys can be arranged among themselves in 5! ways.
Required number of arrangements = 4! * 5! = 24 * 120 = 2880.

Read More In how many ways can live boys and three girls sit in a row such that all boys sit together?
Mathematics Mcqs | Time & Distance Mcqs

Walking 6/7th of his usual speed, a man is 12 minutes too late. What is the usual time taken by him to cover that distance?

Walking 6/7th of his usual speed, a man is 12 minutes too late. What is the usual time taken by him to cover that distance?

A. 1 hr 42 min
B. 1 hr
C. 2 hr
D. 1 hr 12 min
New speed = 6/7 of usual speed
Speed and time are inversely proportional.
Hence new time = 7/6 of usual time
Hence, 7/6 of usual time – usual time = 12 minutes
=> 1/6 of usual time = 12 minutes
=> usual time = 12 x 6 = 72 minutes
= 1 hour 12 minutes

Read More Walking 6/7th of his usual speed, a man is 12 minutes too late. What is the usual time taken by him to cover that distance?