Here are five number cards.
2
5
17
8
9
One of the cards is removed and the mean average
of the demaining four number cards is 6
Which card was removed?
You must show your working.
Note: Please make sure your final answer says card.

Mean is nothing but all of the numbers added together then multiplied by the amount of numbers that there are. In this case, the mean for all of them are 8.2. When you take away the 17, you would be let with 2+5+8+9/4 this results in 24/4 which equals 6.

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Here are five number cards. 2 5 17 8 9 One of the cards is removed and the mean average of the demaining four number cards is 6 Which card was removed? You must show your working. Note: Please make sure your final answer says card.

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Here are five number cards.
2
5
17
8
9
One of the cards is removed and the mean average
of the demaining four number cards is 6
Which card was removed?
You must show your working.
Note: Please make sure your final answer says card.