In a structured proof that the product of two odd integers and is odd

MATHEMATICS · Single correct · CBSE · Mathematics · Number Play · Number Play

Problem

In a structured proof that the product of two odd integers

x

and

y

is odd, the following steps are recorded: (a)

xy = 4kl + 2k + 2l

(b)

xy = 2(kl + k + l) + 1

(c)

xy = 2(2kl + k + l) + 1

(d)

xy

is divisible by

2