Aptitude - Numbers - Discussion

Discussion Forum : Numbers - General Questions (Q.No. 27)
27.
On dividing a number by 56, we get 29 as remainder. On dividing the same number by 8, what will be the remainder ?
4
5
6
7
Answer: Option
Explanation:

Formula: (Divisor*Quotient) + Remainder = Dividend.

Soln:

(56*Q)+29 = D -------(1)

D%8 = R -------------(2)

From equation(2),

((56*Q)+29)%8 = R.

=> Assume Q = 1.

=> (56+29)%8 = R.

=> 85%8 = R

=> 5 = R.

Discussion:
181 comments Page 16 of 19.

Thirumal said:   1 decade ago
These is very easy friends.

First add 56 with 29 because it is the reminder so by adding we get 85.

Then divide these 85 with give number 8 you will get reminder as 5.

Sampath said:   1 decade ago
Easily we can say that the same number is divided by 8. The previous remainder is 28. When 28 is divided by 8 the remainder is 5.

Answer is 5.

Devashish Srivastava said:   1 decade ago
We know that 56 is completely divided by 8, means what ever number divided by 56, 8 can also divide it without remaining any remainder.

We know the remainder which we got during dividing with 56 is 29 ..
Lets see how much more we can solve it by dividing 8.

8)29(3
24
-----
5

We get remainder as 5 .

Thank you.

Harish said:   1 decade ago
When we divide no by 56 R = 29

i.e if we add (56 - 29 = 27) 27 to no. then no is divisible by 56

Same as 29/8 = 3 (29 - 24 = 5)

Ans is 5.

Rishabh Mehta said:   1 decade ago
When any two numbers are divided, they are related as Divisor*Quotient + Remainder = Dividend

Now we know the divisor, and the remainder

Let's assume quotient as 1
then in our case 56*1 + 29 = 85 is the number which gives remainder as 29 when divided by 6

Dividend this same number by 8 gives us the remainder as 5.

Alternative,

Let the dividend be 56*Q + 29, where Q is the quotient

Now dividing this same number by 8, there are two things
1. Since 56 is divisible by 8 therefore 56*Q will give us 0 remainder
2. Dividing 29 by 8 will give us remainder 5

In short the only way to to attempt the question is divided the number by previous divisor and the remainder individually and add the result.
(1)

Ankur said:   1 decade ago
Simply divide the remender with the given number ie on dividing 29 with 8 we get the remender 5.

Sudha said:   1 decade ago
Smallest no. with remainder 29 and divisible by 56 is:

56*1+29=85

85/8,remainder is 5.

Captain sparrow said:   1 decade ago
Divisor=56 and remainder=29.

So dividend =divisor + remainder i.e. 85.

85/8=leaver remainder 5.

Short cut:.

(Dividend=divisor+ remainder).

Vijay said:   1 decade ago
That number must x* 56 + 29,

Let x=0; num=29 then 8)29(3
24
__
5
If we can putx>0 get reminder is above the given answers

Nivendru gavaskar said:   1 decade ago
Simply if any number divided by 56 it means divide by 8 also so only check remainder after divide 29/8 and we will get 5.


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