Quantitative Aptitude - MCQ Practice Questions

If the HCF of 408 and 468 is 36, find their LCM.

Three numbers are in ratio 2:3:4 with HCF = 5. What is their LCM?

Find the largest number that divides 247, 328, and 409 leaving remainder 7 in each case.

The product of HCF and LCM of two numbers is 360. If one number is 20, find the other.

Bell A rings every 12 minutes and Bell B rings every 18 minutes. After how many minutes will they ring together again if they ring at the same time now?

Find HCF of 144, 180, and 192.

The HCF of two numbers is 6. If their LCM is 60 and one number is 12, find the other number.

Four numbers are in the ratio 1:2:3:4 with HCF = 7. Find their LCM.

Two numbers have an HCF of 12. If one number is 60, find the other number such that their LCM is 180.

The HCF of two numbers is 15 and their LCM is 450. If one of the numbers is 90, what is the other number?

A man invests ₹50,000 at 12% per annum SI for 2 years. If he had invested at CI instead, what additional amount would he earn?

Two pipes A and B fill a tank in 20 and 30 minutes respectively. A leak empties it in 60 minutes. How long to fill the tank with all three?

A train 150m long crosses a platform of 250m in 20 seconds. Find its speed in km/h.

A boat covers 24 km upstream in 6 hours and 24 km downstream in 3 hours. Find the speed of the current.

A shopkeeper buys goods at ₹80 and marks it up by 25%. After giving 10% discount, what is his profit percentage?

LCM of two coprime numbers is 180. If one number is 20, find the other.

Worker A completes a job in 15 days. Worker B completes it in 20 days. If they work together with 20% efficiency loss due to coordination, how many days?

Three bells ring at intervals of 8, 12, and 18 minutes. If they ring together at 9:00 AM, when will they ring together again?

A man's salary increases from ₹40,000 to ₹48,000. What is the percentage increase?

HCF of three numbers is 8. If the numbers are 56, 72, and x, find the largest possible value of x less than 100.