Question

5. A box contains 8 slips numbered 1 to 8. Three slips are drawn simultaneously at random from the box.If the numbers obtained are arranged in an order,then find the probability that the number form an arithmetic progression:

Answer 1

I think the answer is d

Answer 2

10/8c3

Possible outcomes are-

123 234 345 456 567 678 246 468 135 357