Aptitude - Numbers - Discussion

Discussion Forum : Numbers - General Questions (Q.No. 46)
46.
In dividing a number by 585, a student employed the method of short division. He divided the number successively by 5, 9 and 13 (factors 585) and got the remainders 4, 8, 12 respectively. If he had divided the number by 585, the remainder would have been
24
144
292
584
Answer: Option
Explanation:
 5 | x                z = 13 x 1 + 12  = 25
 --------------
 9 | y - 4            y = 9 x z + 8  = 9 x 25 + 8  = 233
 --------------
 13| z - 8            x = 5 x y + 4  = 5 x 233 + 4  = 1169
 --------------
   | 1 -12
  
  585) 1169 (1
       585
       ---
       584
       ---
       
  Therefore, on dividing the number by 585, remainder = 584.     
Discussion:
39 comments Page 3 of 4.

Niru said:   5 years ago
In successive division, last quotient is always 1.

Gowry said:   7 years ago
Thanks @Saurabh.

It is very simple to understand.

Rahul said:   1 decade ago
@Sudhir : How come we determine the value of N?

Tomo Lollen said:   2 years ago
Why we took 13 first and not 5? Please explain?

Dharamveer said:   1 decade ago
@Sudhir.

How can we say that the value of k=1.

Ramesh said:   9 years ago
Hello, all.

What is the reverse substitution?
(1)

Kalkesh said:   1 decade ago
Please any one explain me in easy way.
(1)

Supriya karri said:   7 years ago
Nice explanation, Well said @Monica.

Vishnu said:   7 years ago
Thanks for the answer @Ankit Kumar.

Pabitra said:   6 years ago
Anyone, please explain this for me.
(1)


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