The mean of 5 different number is 6 & the mean of 4 different number is 15. Find the mean of 9 numbers
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Answer:
10
Step-by-step explanation:
Sum of 5 Numbers = 5*6 = 30
Sum of 4 Numbers = 4 * 15 = 60
Sum of 5+4 Numbers = 30 + 60
Sum of 9 Numbers = 90
Mean of 9 Numbers = 90/9 = 10
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