2. The arithmetic mean of the numbers 4, 9, 3, 2, n, 5 and 1 is 4. Find n.
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Answer:
4+9+3+2+x+5+1 ÷7 =4
4+2+9+3+x+5+1 =4×7
24+x=28
x=28-24
x=4
Step-by-step explanation:
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