When testing for current in a cable with ten color-coded wires, the author used a meter to test two wires at a time. How many different tests are required for every possible pairing of wires?

i think that you should ask google for the answer to that problem because if we don't know it google does

hello :

by applying the distributive property :

6 × 4.3 = 6 × ( 4 + 0.3 )

            =   (6 ×   4) + (6 ×   0.3)

            = 24 + 1.8

6 × 4.3 = 25.8

your answer would be b