Mark the correct alternative in the following:

A fair die is tossed eight times. The probability that a third six is observed in the eight throw is


Total outcomes= 68

Fix Third 6 is at 8th row.

So other two 6 have to be placed at any of the remaining 7 places=7C2

For remaining 5 places we have 1,2,3,4&5

So total number of favourable cases=