Question

14. If a × b × c
is odd, then ab + bc + ca is?​

Answer 1

Let’s say that...

a = 1 (odd number)

b = 3 (odd number)

c = 5 (odd number)

then, we will subsitute in the trinomial expression: ab + bc + ca

1 x 3 + 3x5 + 5x1 (follow the BODMAS rules)

= 3 + 15 + 5

= 23