Discussion

Explanation:

Let the number be 'abcd'. [a, b, c, d and single digit positive integers.]

Given, 

a × d = 0
a cannot be 0 since the given number has to be a 4 digit number, hence d = 0

Also, a - d = 7
⇒ a = 7

Also, b × c = 18   ...(1)

The thousands digit is as much more than the units digit as the hundreds digit is more than the tens digit
⇒ a - d = b - c = 7   ...(2)

From (1) and (2), we get
b = 9 and c = 2.

∴ The number is 7920.

Hence, 7920.

» Your doubt will be displayed only after approval.


Doubts


Feedback

Help us build a Free and Comprehensive Preparation portal for various competitive exams by providing us your valuable feedback about Apti4All and how it can be improved.


© 2024 | All Rights Reserved | Apti4All