1.

(i) The mean of 4, 9, 10 and x is 8. Find x.​

Answer»

ong>Answer:

9

Step-by-step explanation:

MEAN = SUM of the observation/ No. of observation

=> (4+9+10+x)÷ 4 = 8

=>23+x= 32 [cross multiplying]

=> x=32-23

=> x= 9



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