Question

The squares of which of the following would be odd numbers?

• A. $431$
• B. $2826$
• C. $7779$
• D. $82004$

Answer 1

Answer: (A), (C)

The correct options are
A $431$
C $7779$

The square of a number with odd number at units place is odd and square of a number with even number at units place is even. Hence, Square of $431$ and $7779$ will be odd.