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 4 of 6.
Bhupathi raj said:
10 years ago
Anymore shortcut. The answer complete only two steps please explain.
Vidhya said:
8 years ago
Instead of 10 can we take anyother number to get the actual answer?
Sudha said:
1 decade ago
Why are you taking the 10 digit number. Why not take other digits?
Manasa said:
1 decade ago
Explain this step : (10x + y) - (10y + x) = 36
How 10x+y got ?
How 10x+y got ?
Dennis joel said:
9 years ago
Do we have formulae for calculating this? Please tell me.
Bhupendra said:
1 decade ago
Why would we take 10 we can take 15 or other no also ?
Mahant said:
2 decades ago
Then, (10x + y) - (10y + x) = 36
simlify this
simlify this
Abdul kalam said:
1 decade ago
9x - 9y = 36.
x - y = 4.
How did you get 9?
x - y = 4.
How did you get 9?
Shu said:
1 decade ago
Why have they taken 10 only why not 9 or 4?
Ayushi Nandy said:
4 years ago
Thanks everyone for explaining the answer.
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