Aptitude - Numbers - Discussion

Discussion Forum : Numbers - General Questions (Q.No. 61)
61.
When a number is divided by 13, the remainder is 11. When the same number is divided by 17, then remainder is 9. What is the number ?
339
349
369
Data inadequate
Answer: Option
Explanation:

x = 13p + 11 and x = 17q + 9

13p + 11 = 17q + 9

17q - 13p = 2

q = 2 + 13p
17

The least value of p for which q = 2 + 13p is a whole number is p = 26
17

x = (13 x 26 + 11)

   = (338 + 11)

   = 349

Discussion:
47 comments Page 3 of 5.

Shruti mohite said:   7 years ago
Please explain the method, how p=26 came?

Puja said:   8 years ago
One of the easy ways is check options.

349-11 = 338,
Now,338/13 = 26,
Also,349-9 = 340,
340/17 = 20.

Hence from checking opt. B it is right option.
I hope it is clear to all.
(1)

Justin said:   9 years ago
Please explain the value of P.

Ramesh Mariyada said:   9 years ago
Is there any shortcut method to solve this problem?

Shubham said:   9 years ago
@Ravi.

We have to satisfy the condition so that q should be greater than 1 that is why we take p =2, putting p =2 = 13 * 2 = 26 which is equal to p.

Ravi said:   9 years ago
How are you taking p as 26? Please explain.

Sonu Shaw said:   9 years ago
How p = 26? Please explain that step.

Rajani said:   9 years ago
How we get the value of p=26?

Please explain.

Vrunda said:   10 years ago
How is possible in p=26?

Shashank said:   1 decade ago
How the value of P becomes 26?


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