Question

(iv) Rohan is selling Pens. He has black pen, blue pen and red -pen. If a person buys two pens, and the pens
are not of the same type, then how many different combinations are possible?​

Answer 1

Answer:

3 combinations are possible

Step-by-step explanation:

1st combination of black and blue pen

2nd combination of blue and red pen

3rd combination of red and black pen

Answer 2

Answer:

3C2

Step-by-step explanation:

it is no repatition there hand 3colour pen