Quantitative Aptitude  HCF & LCM  Formula & Concept Quiz
#  Quiz 

1
Discuss

Formula & Concept
The H.C.F. and L.C.M. of 0.63, 1.05 and 2.1
Solution 
2
Discuss

Formula & Concept
Which of the following has the most number of divisors?
Solution 
3
Discuss

Formula & Concept
Which of the following is a pair of coprimes?
Solution 
4
Discuss

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

Formula & Concept
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

Formula & Concept
Three numbers are in ratio 1 : 2 : 3 and HCF is 12. The numbers are:
Solution 
7
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Formula & Concept
The sum of two numbers is 528 and their HCF is 33. The number of such pairs is :
Solution 
8
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Formula & Concept
The product of two numbers is 2028 and their HCF is 13. The number of such pairs is :
Solution 
9
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Formula & Concept
The L.C.M. of two numbers is 48. The numbers are in the ratio 2:3. Then sum of the number is:
Solution 
10
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Formula & Concept
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 
11
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Formula & Concept
The LCM of two numbers is 495 and their HCF is 5. If the sum of the numbers is 100 then their difference is:
Solution 
12
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Formula & Concept
Product of two coprime numbers is 117, then their LCM is
Solution 
13
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Formula & Concept
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 
14
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Formula & Concept
The greatest number which on dividing 1657 and 2037 leaves remainders 6 and 5 respectively is
Solution 
15
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Formula & Concept
What is the least number which when divided by 5, 6, 7 and 8 leaves a remainder 3, but when divided by 9 leaves no remainder?
Solution 
16
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Formula & Concept
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 
17
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Formula & Concept
How many numbers are there between 2000 and 4000 which are divisible by 2,3,4 and 5?
Solution 
18
Discuss

Formula & Concept
(4^{61}+4^{62}+4^{63}+4^{64}) is divisible by
Solution 
19
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Formula & Concept
Find the greatest number that will divide 55, 127 and 175 so as to leaves the same remainder in each case
Solution 
20
Discuss

Formula & Concept
What is the greatest number which when subtracted from 3000, is exactly divisible by 7, 11 and 13 ?
Solution 
#  Quiz 