If the positions of the first and the second digits of each of the numbers are interchanged, in how many numbers thus formed will the first digit be a perfect square? (‘1’ is also a perfect square)
Two
Given that five three-digit numbers are:
356 497 812 739 264
The positions of the first and the second digits of each of the numbers after being interchanged are:
536 947 182 379 624
Given that ‘1’ is also a perfect square, so only in 947 and 147, the first digit is a perfect square.