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(i) The mean of 4, 9, 10 and x is 8. Find x. |
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Answer» ong>Answer: 9 Step-by-step explanation: MEAN = SUM of the observation/ No. of observation => (4+9+10+x)÷ 4 = 8 =>23+x= 32 [cross multiplying] => x=32-23 => x= 9 |
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