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Question
If the average of the numbers 33, 34, 35, x, 37, 38, 39 is 36, what is the value of x?
Options
40
32
42
36
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Solution
36
Explanation:
Average = 36
`=> (33 + 34 + 35 + x + 37 + 38 + 39)/7 = 36`
`=> (216 + x)/7 = 36`
`=> 216 + x = 252`
⇒ x = 36
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