Which one of the following statements is false?
a) a full binary tree has an even number of vertices.
b) a binary tree is an m-ary with m = 2.
c) in an m-ary tree, each internal vertex has at most m children.
d) in a full m-ary tree, each internal vertex has exactly m children.

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Evaluate the expression for the given value of the variable 7a - 4a for a =8

Finally, the arena decides to offer advertising space on the jerseys of the arena’s own amateur volley ball team. the arena wants the probability of being shortlisted to be 0.14. what is this as a percentage and a fraction? what is the probability of not being shortlisted? give your answer as a decimal. those shortlisted are entered into a final game of chance. there are six balls in a bag (2 blue balls, 2 green balls and 2 golden balls). to win, a company needs to take out two golden balls. the first ball is not replaced. what is the probability of any company winning advertising space on their volley ball team jerseys?