The mean of four numbers is 12. The mean of other six numbers is 14. Find the mean of all the numbers.
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Step-by-step explanation:
mean of 4no. = 12
sum of 4 no.= 12×4=48
mean of 6 no.= 14
sum of 6 no. = 14×6 = 84
total sum = 84+48
= 132
total no = 4+6
= 10
mean of 10 no.= 132/10
= 13.2
#666
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