Question
Four runners started running simultaneously from a point on a circular track. They took 400 seconds, 600 seconds, 720 seconds and 900 seconds to complete one round. After how much time do they meet at the starting point for the first time ?
More HCF and LCM Questions
- A number is three times another number and their HCF is 8. What is the sum of the squares of the numbers?
- The HCF of two numbers is 64, and their LCM is 1920. What is the sum of the numbers?
- LCM and HCF of two numbers are respectively 3 and 18. If one of them is 9, find the other number.
- Let N be the greatest number that will divide 78, 109, 140 leaving the same remainder in each case. Then sum of the digits in N is:
- Find the smallest 4-digit number that is exactly divisible by 14, 20 and 27.
- Determine the HCF of 150 and 1350.
- If the product of two numbers is 350 and their HCF is 10, then find the LCM of the given two numbers.
- The sum and difference of L.C.M and H.C.F of two numbers are 294 and 126. If one of the numbers is 21, find the other number.
- What is the Highest Common Factor of 36, 108 and 180?
- The smallest number which when divided by 29 and 33 leaves remainder 11 and 15 respectively is:
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