Question

Show that abc + ab +b is a composite number, where a, b and c are
natural number less than 2​

Answer 1

Answer:

Step-by-step explanation:Let values of a, b, c as

  a=1; b= a+1 , c=a+ b+1

therefore , abc + ab + b = (1 x 2 x 4) + ( 1 x 2) + (2 )

                                        = 8+ 2 + 2

                                        = 12 which is a composite number .