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. 5)
5.
The greatest number of four digits which is divisible by 15, 25, 40 and 75 is:
9000
9400
9600
9800
Answer: Option
Explanation:

Greatest number of 4-digits is 9999.

L.C.M. of 15, 25, 40 and 75 is 600.

On dividing 9999 by 600, the remainder is 399.

Required number (9999 - 399) = 9600.

Discussion:
120 comments Page 11 of 12.

Divya said:   5 years ago
Why we are using lcm here instead of hcf?
(7)

Sharada said:   8 years ago
Thank you all. Very useful explanation.

Atul said:   9 years ago
@Pravin.

I agree with you. Thank you.

Vaani said:   1 decade ago
Why to subtract remainder from 9999 ?

Gwene said:   1 decade ago
Vishnu why should we divide by 40?

Nandha said:   1 decade ago
Why we have to subtract (9999-399)?

Soumya said:   1 decade ago
Why do we use LCM instead of HCM?

Angelina said:   5 years ago
How did we get 9999? Explain it.
(4)

Aslam said:   1 decade ago
Please calculate the remainder.

Sam said:   1 decade ago
Great explanation Debashree.


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