Select the odd number pair from the following options.

D. (25, 50)

What is the H.C.F. of the polynomials 2x^2 + 4x and 4x^2 + 8x?

A. 2X

Which number is different from the others?

C. 28

What is the next letter in the series: A, C, E, G, ?

A. I

Assertion (A): All squares are rectangles. Reason (R): Rectangles have four sides. Which of the following is correct?

A. BOTH A AND R ARE TRUE, AND R IS THE CORRECT EXPLANATION FOR A.