If the average of 1,4,9 x ,25,36 and 49,is 20, then x=?
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Answer:
If the average of 1,4,9 x ,25,36 and 49,is 20, then x=?
Step-by-step explanation:
AVERAGE = SUM OF ALL NUMBER / TOTAL NUMBER
20 = 1+4+9+X+25+36+49 /7
20 * 7 = 124+X
140 -124 = X
16= X
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