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

LCM of two numbers is 138. But their (Greatest common divisor) GCD is 23. The numbers are in a ratio 1:6. Which is the largest number amongst the two?

Byadmin July 12, 2019August 4, 2021

LCM of two numbers is 138. But their (Greatest common divisor) GCD is 23. The numbers are in a ratio 1:6. Which is the largest number amongst the two?

A. 46
B. 138
C. 69
D. 23

Mathematics Mcqs | Probability

If six persons sit in a row, then the probability that three particular persons are always together is____________?

If six persons sit in a row, then the probability that three particular persons are always together is____________?

A. 1/20
B. 3/10
C. 1/5
D. 4/5
Explanation:
Six persons can be arranged in a row in 6! ways. Treat the three persons to sit together as one unit then there four persons and they can be arranged in 4! ways. Again three persons can be arranged among them selves in 3! ways. Favourable outcomes = 3!4! Required probability = 3!4!/6! = 1/5

Read More If six persons sit in a row, then the probability that three particular persons are always together is____________?
interest Mcqs | Mathematics Mcqs

Rs. 800 amounts to Rs. 920 in 3 years at simple interest. If the interest rate is increased by 3%, it would amount to how much ?

Rs. 800 amounts to Rs. 920 in 3 years at simple interest. If the interest rate is increased by 3%, it would amount to how much ?

A. Rs. 992
B. Rs. 1112
C. Rs. 1056
D. Rs. 1182
Principal = 800 SI = 120 Time = 3 year
Rate = (100*120/800*3) = 5%
New rate = 8 % principal = 800 time 3 year
SI = (800*8*3/100) = 192
New amount = 800 + 192= 992

Read More Rs. 800 amounts to Rs. 920 in 3 years at simple interest. If the interest rate is increased by 3%, it would amount to how much ?
interest Mcqs | Mathematics Mcqs

What is the rate of interest at which Rs.150 becomes Rs. 220 in 10 years.

What is the rate of interest at which Rs.150 becomes Rs. 220 in 10 years.

A. 11/3%
B. 14/3%
C. 12%
D. 14%

Read More What is the rate of interest at which Rs.150 becomes Rs. 220 in 10 years.
Mathematics Mcqs | Partnership

A and B invests Rs.8000 and Rs.9000 in a business. After 4 months, A withdraws half of his capital and 2 months later, B withdraws one-third of his capital. In what ratio should they share the profits at the end of the year?

A and B invests Rs.8000 and Rs.9000 in a business. After 4 months, A withdraws half of his capital and 2 months later, B withdraws one-third of his capital. In what ratio should they the profits at the end of the year?

A. 20:23
B. 34:43
C. 32:45
D. 37:45
Explanation:
A : B
(8000*4)+(4000*8) : (9000*6)+(6000*6)
64000 : 90000
32 : 45

Read More A and B invests Rs.8000 and Rs.9000 in a business. After 4 months, A withdraws half of his capital and 2 months later, B withdraws one-third of his capital. In what ratio should they share the profits at the end of the year?
Mathematics Mcqs | Mensuration

An order was placed for the supply of a carpet whose breadth was 6 m and length was 1.44 times the breadth. What be the cost of a carpet whose length and breadth are 40% more and 25% more respectively than the first carpet. Given that the ratio of carpet is Rs. 45 per sq m?

An order was placed for the supply of a carpet whose breadth was 6 m and length was 1.44 times the breadth. What be the cost of a carpet whose length and breadth are 40% more and 25% more respectively than the first carpet. Given that the ratio of carpet is Rs. 45 per sq m?

A. Rs. 3642.40
B. Rs. 3868.80
C. Rs. 4216.20
D. Rs. 4082.40
Length of the first carpet = (1.44)(6) = 8.64 cm
Area of the second carpet = 8.64(1 + 40/100) 6 (1 + 25/100)
= 51.84(1.4)(5/4) sq m = (12.96)(7) sq m
Cost of the second carpet = (45)(12.96 * 7) = 315 (13 – 0.04) = 4095 – 12.6 = Rs. 4082.40

Read More An order was placed for the supply of a carpet whose breadth was 6 m and length was 1.44 times the breadth. What be the cost of a carpet whose length and breadth are 40% more and 25% more respectively than the first carpet. Given that the ratio of carpet is Rs. 45 per sq m?
Mathematics Mcqs | Men Food Mcqs

A group of people has provisions for 29 days for 24 men. If after 4 days 1/6 of them desert then food will last for?

A group of people has provisions for 29 days for 24 men. If after 4 days 1/6 of them desert then food will last for?

A. 25 days
B. 28 days
C. 30 days
D. 32 days

Read More A group of people has provisions for 29 days for 24 men. If after 4 days 1/6 of them desert then food will last for?