The mean of 10 observations is 17. One more observation is included and the new mean becomes 16. The 11th observation is

Chauri Chaura is a town located in which Indian state/UT?

Find the missing value denoted by '?'

3 : 243 :: 5 : ?

The mean of a distribution is 15 and the standard deviation is 5. What is the value of the coefficient variation?

The ratio of the number of marbles that Joyee and Minati had was 5 : 8 while the ratio of the number of marbles that Jacob and Minati had was 7 : 12. What is the ratio of the number of marbles that Joyee and Jacob had?

Present age of R and S are in the ratio of 3 : 2 respectively. If the present age of H is 117 years and R’s present age is 4/13 of H’s present age, then after how many years the ages of R and S would be in the ratio of 15 : 11?

If 6@16 = 11, 2@14 = 8 and 8@8 = 8, then find the value of 10@18 = ?

The difference between the ages of two sisters is 4 years when father's age is 54. Father is elder by 2 years to mother . Younger sister's age is half of mother's age. Find the age of elder sister.