Using sequential search

The probability that the item IS NOT in the array is 41. If the item is in the array, the probability that the last item in the array matches the search key is 81. The probability that the next to the last item of the array matches the search key is 51. The probabilities matching any of the remaining items are all equal. 1. (0.8 points) What is the probability (as a function of n ) of matching one of the 1st through (n2)nd items? Show all your work to get credit