290707NF 290707NF

09-02-2021
Mathematics

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'Here are 5 number cards, '2' '5' '7' '8' '9'. One of the cards is removed and the mean average of the remaining 4 cards is 6. Which card was removed (Please show your working).

Here are 5 number cards 2 5 7 8 9 One of the cards is removed and the mean average of the remaining 4 cards is 6 Which card was removed Please show your working class=

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farhanzishanfarhan farhanzishanfarhan

09-02-2021

Answer:

9

Step-by-step explanation:

'Here are 5 number cards, '2' '5' '7' '8' '9'. One of the cards is removed and the mean average of the remaining 4 cards is 6. Which card was removed (Please show your working).

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