The H.C.F. and L.C.M. of 0.63, 1.05 and 2.1
0.20 and 6.31
0.21 and 5.30
0.21 and 6.30
1.21 and 6.50
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#  Quiz 

1
Discuss

How many numbers are there between 2000 and 4000 which are divisible by 2,3,4 and 5?
Solution 
2
Discuss

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

What is the greatest number which when subtracted from 3000, is exactly divisible by 7, 11 and 13 ?
Solution 
4
Discuss

Find the LCM of 2/3, 3/5, 4/7 and 9/13.
Solution 
5
Discuss

HCF of 3240, 3600 and a third number is 36 and their LCM is 2^{4}×3^{5}×5^{2}×7^{2} Then the third number is
Solution 
6
Discuss

The greatest number which on dividing 1657 and 2037 leaves remainders 6 and 5 respectively is
Solution 
7
Discuss

Which of the following has the most number of divisors?
Solution 
8
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 
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

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 
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