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

HCF of 3/16, 5/12, 7/8 is__________?

Byadmin July 12, 2019August 4, 2021

HCF of 3/16, 5/12, 7/8 is__________?

A. 2/47
B. 3/47
C. 1/48
D. 5/48

Explanation:
HCF of numerators = 1
LCM of denominators = 48
=> 1/48

Areas | Mathematics Mcqs

parallelogram has sides 60 m and 40 m and one of its diagonals is 80 m long then its area is:__________?

parallelogram has sides 60 m and 40 m and one of its diagonals is 80 m long then its area is:__________?

A. 480 sq.m
B. 320 sq.m
C. 600√15 sq.m
D. 450√15

Read More parallelogram has sides 60 m and 40 m and one of its diagonals is 80 m long then its area is:__________?
Mathematics Mcqs | Pipes and Cisterns

A tank is filled in 5 hours by three pipes A, B and C. The pipe C is twice as fast as B and B is twice as fast as A. How much time will pipe A alone take to fill the tank?

A tank is filled in 5 hours by three pipes A, B and C. The pipe C is twice as fast as B and B is twice as fast as A. How much time will pipe A alone take to fill the tank?

A. 20 hrs
B. 25 hrs
C. 35 hrs
D. Cannot be determined
Explanation:
Suppose pipe A alone takes x hours to fill the tank.
Then, pipes B and C will take x/2 and x/4 hours respectively to fill the tank.
1/x + 2/x + 4/x = 1/5
7/x = 1/5 => x = 35 hrs.

Read More A tank is filled in 5 hours by three pipes A, B and C. The pipe C is twice as fast as B and B is twice as fast as A. How much time will pipe A alone take to fill the tank?
Compound Interest | Mathematics Mcqs

If the C.I. on a sum for 2 years at 12 1/2 % per annum is Rs. 510, the S.I. on the same sum at the same rate for the same period of time is________?

If the C.I. on a sum for 2 years at 12 1/2 % per annum is Rs. 510, the S.I. on the same sum at the same rate for the same period of time is________?

A. Rs. 400
B. Rs. 450
C. Rs. 460
D. Rs. 480
Explanation:
Let the sum be Rs. P. Then,
[P(1 + 25/(2 * 100))2 – P] = 510
P[(9/8)2 – 1] = 510.
Sum = Rs. 1920
So, S.I. = (1920 * 25 * 2) / (2 * 100) = Rs. 480

Read More If the C.I. on a sum for 2 years at 12 1/2 % per annum is Rs. 510, the S.I. on the same sum at the same rate for the same period of time is________?
Compound Interest | Mathematics Mcqs

The difference between simple interest and C.I. at the same rate for Rs.5000 for 2 years in Rs.72. The rate of interest is?

The difference between simple interest and C.I. at the same rate for Rs.5000 for 2 years in Rs.72. The rate of interest is?

A. 10%
B. 12%
C. 6%
D. 8%
Explanation:
5000 = 72(100/R)2
5 R2 = 720 => R = 12

Read More The difference between simple interest and C.I. at the same rate for Rs.5000 for 2 years in Rs.72. The rate of interest is?
Areas | Mathematics Mcqs

A circular wire of radius 42 cm is cut and bent in the form of a rectangle whose sides are in the ration of 6:5 The smaller side if the rectangle is:_________?

A circular wire of radius 42 cm is cut and bent in the form of a rectangle whose sides are in the ration of 6:5 The smaller side if the rectangle is:_________?

A. 30 cm
B. 60 cm
C. 72 cm
D. 132 cm

Read More A circular wire of radius 42 cm is cut and bent in the form of a rectangle whose sides are in the ration of 6:5 The smaller side if the rectangle is:_________?
Mathematics Mcqs | Problems on L.C.M and H.C.F

A heap of coconuts is divided into groups of 2, 3 and 5 and each time one coconut is left over. The least number of Coconuts in the heap is_______?

A heap of coconuts is divided into groups of 2, 3 and 5 and each time one coconut is left over. The least number of Coconuts in the heap is_______?

A. 31
B. 41
C. 51
D. 61
Explanation:
LCM = 30 => 30 + 1 = 31

Read More A heap of coconuts is divided into groups of 2, 3 and 5 and each time one coconut is left over. The least number of Coconuts in the heap is_______?