If the mean of the data 3, 21, 25, 17, (x+3), 19, (x - 4) is 18, find

1.	If the mean of the data 3, 21, 25, 17, (x+3), 19, (x - 4) is 18, find the valueof x. Using this value of x, find the mode of the data.
Answer» Mean=18[3+21+25+17+x+3+19+x-4]/7=1884+2x=1262x=126-842x=42x=42/2x=21new data is3,21,25,17,24,19,17so mode=17 mean=183+21+25+17+(x+3)+19+(x-4)/7=1868+2x-1/7=18x=21mode=17 17 is the correct answer to this question . 17 is absolutely the correct answer to this question . the value of X ki power 21 - X ki power 17 =?

If the mean of the data 3, 21, 25, 17, (x+3), 19, (x - 4) is 18, find the valueof x. Using this value of x, find the mode of the data.

Answer»

Mean=18[3+21+25+17+x+3+19+x-4]/7=1884+2x=1262x=126-842x=42x=42/2x=21new data is3,21,25,17,24,19,17so mode=17

mean=183+21+25+17+(x+3)+19+(x-4)/7=1868+2x-1/7=18x=21mode=17

17 is the correct answer to this question .

17 is absolutely the correct answer to this question .

the value of X ki power 21 - X ki power 17 =?