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 4 of 19.

Monika Duseja said:   10 years ago
Let y be the number divided.

Therefore, y = 56q+29.

= 8*7q+8*3+5.

= 8(7q+3)+5.

So remainder is 5.

Sukesh said:   10 years ago
What @Ramesh said is absolutely correct it saves more time.

Manish said:   10 years ago
Hi,

The same number is divided by two divisor, 56 & 8.

Now, 56/8 = Divisible. So, 56 is multiple of 8.

Since, Remainder for 56=29>8 (smaller divisor).

Remainder for 8 is 8) 29 (4.
24
Required remainder 5.

Raja said:   10 years ago
56+29 = 85.

56)85(1
56
----
29

8)85(10
80
----
5

If you are not a fool you will understand.

Satyajit Parida said:   10 years ago
Simply divide 29 / 8 = 5 (remainder).

Aryan said:   10 years ago
Hi,

Firstly let the number is 'x'. And quotient is k then,

x = 56k + 29 we can write ok the number is same in second cases that is 'x' then now taking 8 as a common so x = 8 (7k + 3) + 5 so 5 is your remainder now.

Aarchi said:   10 years ago
x%56=29.

(x-29) %56=0.
(x-29) %8=0.

x%8=29%8.
X=5.

Chatrapathikrishnaji said:   1 decade ago
Since 56 is divisible by 8, the remainder of a number divisible by 56 is taken as the dividend divisible by 8 to get the remainder when divisible by 8.

Given that a number divisible by 56 leaves remainder of 29. By the above explanation divide 29 by 8, then we get the remainder 5.

Maitri said:   1 decade ago
D = 56Q+29 ----> (1).

D = 8q+r -----> (2).

Convert (1) to the form of (2).

D = 56Q+29 = (8*7)Q+24+5 = (8*7)Q+(8+3)+5 = 8(7Q+3)+5.

Therefore, remainder is 5.

Mogli rathod said:   1 decade ago
I want more example on each topic.


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