Question

Give a number which can be represented in the form of a line, a triangle and a rectangle.

Answer 1

Number 10 can be represented in the form of a line, a triangle and a rectangle

• Any counting number can be represnted in form of a line.
• 1 + 2 + 3 + 4 = 10, so 10 is a triangular number.
• 5 $\times 2$ = 10, so 10 can be represnted in form of a rectangle having 5 rows - 2 columns or vice versa.