If the position of the second and the third digits of each of the numbers are interchanged, in how many numbers thus formed will the last digit be
a perfect square ?('1' is also a perfect square )

Solution

After interchanging the position of second and third digit of numbers we get, 621,598,734,486,279. Only in 621,279 and 734, last digit is a perfect square and hence, the answer is option C.

Share on Whatsapp Share on Whatsapp

Create a FREE account and get:

Banking Quant Shortcuts PDF
Free Banking Study Material - (15000 Questions)
135+ Banking previous papers with solutions PDF
100+ Online Tests for Free

SBI Associated Clerk 2011 Question Paper (2nd Shift)

If the position of the second and the third digits of each of the numbers are interchanged, in how many numbers thus formed will the last digit bea perfect square ?('1' is also a perfect square )

Login to your Cracku account

Hello! 👋

Ready to Unlock Your Success?

Please Enter Your OTP

Please enter the following details

Create a free Cracku account

If the position of the second and the third digits of each of the numbers are interchanged, in how many numbers thus formed will the last digit be
a perfect square ?('1' is also a perfect square )