Aptitude - Problems on Numbers - Discussion
Discussion Forum : Problems on Numbers - General Questions (Q.No. 3)
3.
The difference between a two-digit number and the number obtained by interchanging the positions of its digits is 36. What is the difference between the two digits of that number?
Answer: Option
Explanation:
Let the ten's digit be x and unit's digit be y.
Then, (10x + y) - (10y + x) = 36
9(x - y) = 36
x - y = 4.
Video Explanation: https://youtu.be/7QOJjAmGVx0
Discussion:
59 comments Page 3 of 6.
Jeevan said:
6 years ago
Here, it is given the number obtained by interchanging the position 2 digit number not 1 digit number like 93 - 39 = 36.
(4)
Arpish said:
7 years ago
If in the question it is asked to find the 2 digit number, then how can we find it, can anyone explain?
Udaya said:
4 years ago
The question is that interchanging position.
Where did they ask 10th digit place?
Please explain me.
Where did they ask 10th digit place?
Please explain me.
(5)
Nishant said:
1 decade ago
Is that method of considering 10 for the units place should be applied for all the problems?
Swati said:
1 decade ago
Why in solution its written tens digit be x and unit digit be y? can any one explain me. ?
Kama gupta said:
9 years ago
By trick,
For difference = d/9 and for sum = s/11.
So,
Difference = 36/9 = 4 (answer).
For difference = d/9 and for sum = s/11.
So,
Difference = 36/9 = 4 (answer).
(2)
Bhavya said:
1 decade ago
@Sudha.
They take 10 number because of it is in ten's place. So they take 10 number :).
They take 10 number because of it is in ten's place. So they take 10 number :).
Sandt said:
1 decade ago
Some time they take 10 digit no x and some time 10x. Why anybody explain me?
Pukkaprotagonist@gmail.com said:
1 decade ago
Tell me if we have used any formula there or its just common sense :D.
Bgnr said:
9 years ago
Why we take x and why in addition to 10x and 10y, can anyone explain?
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