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Hi there! Have questions about your homework? At Brainly, there are 60 million students who want to help each other learn. Questions are usually answered in less than 10 minutes. Try it for yourself by posting a question! :D

Easy, 3^1=3 3^2=9 3^3=27 3^4=81 3^5=243 3^6=729 etc etc etcetc so total number can be filled at unit place are 9,7,1,3 so total probability is 4 and favorable is 1 so probability is 1/4

For n=1 we have 3 in unit place n=2 we have 9 at unit place n=3 we have 7at unitplace n=4 we have 1 at unitplace n=2 we have 3 at unit place similarly it can be seen that only 3,9,7,1 appear at unit place In other words there are 4 possible outcomes and probabilityof 3 appearing is is 1/4.