Find the LCM of 2/3, 3/5, 4/7 and 9/13.
36
1/36
1/1365
12/455
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1
Discuss

Three numbers are in ratio 1 : 2 : 3 and HCF is 12. The numbers are:
Solution 
2
Discuss

The sum of two numbers is 528 and their HCF is 33. The number of such pairs is :
Solution 
3
Discuss

The H.C.F and L.C.M of two numbers are 11 and 385 respectively. If one number lies between 75 and 125 , then that number is
Solution 
4
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Which of the following has the most number of divisors?
Solution 
5
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The product of two numbers is 2028 and their HCF is 13. The number of such pairs is :
Solution 
6
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The H.C.F. and L.C.M. of 0.63, 1.05 and 2.1
Solution 
7
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Four bells ring at intervals of 6, 8, 12 and 18 seconds respectively since 12 o’clock. How many times will they ring simultaneously within 6 minutes of the time? (excluding the one at the start)
Solution 
8
Discuss

Product of two coprime numbers is 117, then their LCM is
Solution 
9
Discuss

The LCM and HCF of two numbers are 84 and 21, respectively. If the ratio of the two numbers is 1 : 4, then the larger of the two numbers is
SolutionAnswer 84 
10
Discuss

The L.C.M. of two numbers is 48. The numbers are in the ratio 2:3. Then sum of the number is:
Solution 
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