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. 22)
22.
Three numbers which are co-prime to each other are such that the product of the first two is 551 and that of the last two is 1073. The sum of the three numbers is:
75
81
85
89
Answer: Option
Explanation:

Since the numbers are co-prime, they contain only 1 as the common factor.

Also, the given two products have the middle number in common.

So, middle number = H.C.F. of 551 and 1073 = 29;

First number = 551 = 19;    Third number = 1073 = 37.
29 29

Required sum = (19 + 29 + 37) = 85.

Discussion:
53 comments Page 5 of 6.

Dinu said:   7 years ago
@Jyoti.

30-1 = 29.
So,
80+5=85.

Preethi said:   9 years ago
I can't understand how 29 comes?

Ayush said:   3 months ago
Agree C is the correct answer.

Vishnu said:   1 decade ago
Awesome way of explaining :-)

Anamika said:   7 years ago
Thanks all for the answer.
(1)

Vinayak said:   1 decade ago
@uttam. You are right.

Aby said:   9 years ago
Thank you, @Ashutosh.

Sujeeth said:   1 decade ago
Explain how 29 came?

Anant said:   9 years ago
Thanks @Ashutosh.

Abhoi said:   7 years ago
Thanks @Asutosh.


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