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:
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 7 of 12.
Nagalakshmi said:
9 years ago
Why we should take LCM of number instead of taking HCF? Anyone can explain clearly?
Aparna said:
1 decade ago
@vishnu.
How 9000, 9400 and 9800 are not divsible by 40?.
It is divisible by 40.
How 9000, 9400 and 9800 are not divsible by 40?.
It is divisible by 40.
Sri said:
9 years ago
Why are you not divide 600 by 96000, which is exactly divisible?
Please tell me.
Please tell me.
Sanju said:
7 years ago
Highest four digit possible number is 9999 because 10000 is a 5 digit number.
V!cky said:
10 years ago
9800-9000 = 800.
9600-9400 = 200.
800-200 = 600.
Solved further get 399.
9600-9400 = 200.
800-200 = 600.
Solved further get 399.
Nitya said:
1 decade ago
Just find the lcm of 15, 40, 25, 75.
Then you will get the answer as 600.
Then you will get the answer as 600.
Abdul said:
1 decade ago
How can I divide 9999/600 to get 399? Can you please clearly elaborate it?
Lakhan said:
1 decade ago
@Rahul
How can you ignore 75= 15 x 5 = 5 x 5 x 3 while calculating LCM ?
How can you ignore 75= 15 x 5 = 5 x 5 x 3 while calculating LCM ?
Sandeep said:
8 years ago
Lcm 600 multiple with 16 we got 9600 it is greatest number of LCM of 600.
Vinod said:
1 decade ago
I don't know how to do LCM & HCF, anyone can you help me how to do?
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