LCM/HCF of numbers, fractions and decimals; word problems.
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Q1 · LCM and HCF · MEDIUM
Three bells toll at intervals of 9, 12 and 15 minutes respectively. If they start tolling together at 8:00 AM, at what time will they toll together again?
Q2 · LCM and HCF · MEDIUM
The HCF of two numbers is 23 and their LCM is 1449. If one of the numbers is 161, what is the other number?
Q3 · LCM and HCF · HARD
Find the greatest number that will divide 215, 167 and 263 leaving remainders 5, 7 and 3 respectively.
Q4 · LCM and HCF · MEDIUM
Find the LCM of 12, 18, and 24.
Q5 · LCM and HCF · EASY
Find the HCF of 48 and 64.