Advertisements
Advertisements
प्रश्न
If the mean of 7, 16, 9, 15, 16, a, 12, 8, b, 11 is 12, write a in terms of b.
उत्तर
Mean = `(sumx)/"N"`
= `(7 + 16 + 9 + 15 + 16 + "a" + 12 + 8 + "b" + 11)/(10)`
∴ 12 = `(94 + "a" + "b")/(10)`
⇒ 120 = 94 + a + b
⇒ a = 120 - 94 - b = 26 - b
∴ a = 26 - b.
APPEARS IN
संबंधित प्रश्न
Find the mean of x + 3, x + 5, x + 7, x + 9 and x + 11.
Find the mean of 8, 12, 16, 22, 10 and 4. Find the resulting mean, if each of the observations, given above, be: increased by 25%
The mean weight of 60 students in a class is 40 kg. The mean weight of boys is 50 kg while that of girls is 30 kg. Find the number of boys and girls in the class.
The mean of 10 numbers is 24. If one number is included, the new mean is 25. Find the included number.
Find the mean and median of all the positive factors of 72.
Find the mean and median of the data: 35, 48, 92, 76, 64, 52, 51, 63 and 71.
If 51 is replaced by 66, what will be the new median?
For the set of numbers given below, find mean: 5, 7, 8, 4, 6
The daily maximum relative humidity (in percent) in Mumbai from May 1 to May 7, 1992 is given below: 64, 70, 65, 80, 75, 78
Find the mean.
The mean of 16 natural numbers is 48. Find the resulting mean, if each of the number is increased by 5
The mean of 16 natural numbers is 48. Find the resulting mean, if each of the number is increased by 50%
