Question

P = (x:x² = 4, x is odd), then n(P) =
2) 1 3) 2 4) 7​

Answer 1

Answer:

Let x=3,

Then x

2

=(3)

2

=9

If x=5,

Then x

2

=(5)

2

=25

If x=7,

Then x

2

=(7)

2

=49

So, if x is odd, then the digit in the units place of the resultant number is odd.

Hence, x

2

is also odd.