Answer :

According to the question

A x A = 9

The one’s place in the product of A and A is 9

A is the number whose multiplication with itself gives a two digit number having 9 in it’s one’s place.

Hence A = 7 because A x A = 49 and one’s place of 49 is 9

Option (c) is correct.

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
view all courses

Solved eachRD Sharma - Mathematics

If the 4-digit nuRS Aggarwal - Mathematics

If x7y5 is exactlRS Aggarwal - Mathematics

If 1A2B5 is exactRS Aggarwal - Mathematics

Find all possibleRS Aggarwal - Mathematics

If 37y4 is exactlRS Aggarwal - Mathematics

Replace A, RS Aggarwal - Mathematics

If 486*7 isRS Aggarwal - Mathematics

Find the vaRS Aggarwal - Mathematics

Solved eachRD Sharma - Mathematics