Question

75.
If a and b are odd numbers, then which
of the following is even ?
(A) a + b + ab
(B)
a+b-1
(C)
a+b+1
(D)
a + b + 2ab​

Answer 1

the correct answer is d as shown in figure

Answer 2

Answer:

D

Step-by-step explanation:

Let a and b be 1 and 3

Checking in a = 1+3+1x3 = 7 not.

Checking in b = 1+3-1 = 3 not.

Checking in c = 1+3+1 = 5 not.

Checking in d = 1+3+2(1x3) = 10 yes.