Question

the mean of 10 numbers is 55. if one number is excluded their mean become 50 .the excluded number is

Answer 1

Hey,

There is your answer

Thanks

Answer 2

★ Ello ★

here is your answer !!!

the mean of 10 number is = 55


mean = sum of observation / total number of observation


=> 55 = sum of 10 numbers / 10


sum of 10 number = 550



now ,




let the exclude number be " X "


mean = sum of 10 number - x / 9


50 × 9 = 550 - X


=> 450 = 550 - X



=> x =100


hence , the number excluded is 100


★Ans :- 100 ★


hope it helps you dear !!



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