Mathematics
If the mean of x1 and x2 is 12.5 and mean of x1, x2 and x3 is 16. The value of x3 is :
32
3.5
285
23
Related Questions
Mean of 20 observations (numbers) is 30. If one number is excluded, the mean of remaining numbers becomes 28. The excluded number is :
532
1132
68
572
If each observation of the data is decreased by 15; then the mean :
remains same
is increased by 15
is decreased by 15
is multiplied by 15
Find the mean of 43, 51, 50, 57 and 54.
Find the mean of first six natural numbers.