Study the following diagram consisting of a circle, a rectangle and a triangle and answer the question given below it.

If the circle is called 'rectangle rectangle is called triangle' and triangle is called 'circle', which number is only in the triangle but not in other two diagrams?

Options

A. 1
B. 16
C. 7
D. 6

Answer

A

Explanation

Rectangle to question, Rectangle is triangle. Hence 1, 8, 9, 16 are only in the triangle but not in other two diagrams.