Aptitude - Problems on H.C.F and L.C.M - Discussion
Discussion Forum : Problems on H.C.F and L.C.M - General Questions (Q.No. 30)
30.
If the sum of two numbers is 55 and the H.C.F. and L.C.M. of these numbers are 5 and 120 respectively, then the sum of the reciprocals of the numbers is equal to:
Answer: Option
Explanation:
Let the numbers be a and b.
Then, a + b = 55 and ab = 5 x 120 = 600.
 The required sum = |
1 | + | 1 | = | a + b | = | 55 | = | 11 |
| a | b | ab | 600 | 120 |
Discussion:
37 comments Page 3 of 4.
Viswajith said:
1 decade ago
The HCF of two numbers is 15. Find its LCM? Anyone please help with steps.
Diviya priya said:
9 years ago
If the sum of the 2 numbers is 220 and the LCM is 99. Then find the HCF?
Anisa said:
9 years ago
If LCM of two number is 729, then HCF is? Please give me the solution.
M.v.krishna said:
1 decade ago
Its not clear for me, why the product of hcf and lcm are taken as ab.
Tom said:
1 decade ago
The sum of two numbers is 120 and their hcf is 12. Find the numbers?
Deshraj said:
9 years ago
How can we find out the co-prime of any numeric number? Explain.
Gurinder said:
1 decade ago
@^^ Product of two numbers = Product of their H.C.F. and L.C.M.
Sonu kumar said:
1 decade ago
How product of two number will be its product of LCM and HCF?
Shiva said:
1 decade ago
How product of two number will be its product of LCM and HCF?
Math_lover said:
1 decade ago
@Tom.
There are 2 answers for this:
12 and 108.
36 and 84.
There are 2 answers for this:
12 and 108.
36 and 84.
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