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187-B1-2
2. Find out whether each game is fair or unfair. ( Fair , Unfair )
Example 12
Jessica and Ryan take turns to toss a coin. 13
Jessica wins if she get heads. ( Fair , Unfair )
Ryan wins if the coin stands on its edge.
a. Ryan and Ann take turns to spin a spinner.
Ryan wins if the pointer lands on a 2.
Ann wins if the pointer lands on a 1 or 3.
b. Ann and Ryan take turns to roll a die. ( Fair , Unfair )
Ann wins if she rolls a number less than 4.
Ryan wins if he rolls a number greater than 3.
c. Ricky and Jessica take turns to take a marble out of a bag.
Ricky wins if he takes out a marble numbered 1. 11
Jessica wins if she takes out a marble numbered 2. 1
22
( Fair , Unfair )
2. Find out whether each game is fair or unfair. ( Fair , Unfair )
Example 12
Jessica and Ryan take turns to toss a coin. 13
Jessica wins if she get heads. ( Fair , Unfair )
Ryan wins if the coin stands on its edge.
a. Ryan and Ann take turns to spin a spinner.
Ryan wins if the pointer lands on a 2.
Ann wins if the pointer lands on a 1 or 3.
b. Ann and Ryan take turns to roll a die. ( Fair , Unfair )
Ann wins if she rolls a number less than 4.
Ryan wins if he rolls a number greater than 3.
c. Ricky and Jessica take turns to take a marble out of a bag.
Ricky wins if he takes out a marble numbered 1. 11
Jessica wins if she takes out a marble numbered 2. 1
22
( Fair , Unfair )
