Problem

One of a pair of dice is loaded so that the chance of a 1 turning up is 1/5, the other faces being equally likely. Its mate is loaded so that the chance of a 6 turning up is 1/5 the other faces being equally likely. How much does this loading increase the probability of throwing a 7 with the two dice?

A. 1 in 700

B. 1 in 720

C. 1 in 750

D. 1 in 780

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Unbalance Coin (CE Board) - GERTC+

A coin is so unbalanced that you are likely to get two heads in two successive throws as you are to get tails in one. What is the probability of getting heads in a single throw?

A. 0.618

B. 0.206

C. 0.375

D. 0.750

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