For the following questions answer them individually
If the arithmetic mean of 17. 2a-b. 2b-c and 2c-a is 20 then the arithmetic mean of a, b, c is
The medianof the observations 7, 5. 2, 6, 4. 3, 15, 14, 19, 25, 8, 11, 13 is
The mode of the following data
The standard deviation of 12, 16, 23, 18, 24, 15 is
If x $$neq$$ 0 then the variance of x + 1, x + 2, x + 3, x + 7, x + 8, x + 9 is
From a well-shuffled deck of playing cards the probability of choosing a card at random which is either a red card or an ace. is
The probability for a number chosen at random from the first 32 natural numbers to be a composite, is
A bag contains 8 white balls and 6 red balls. The probability of drawing at random two balls of the same colour is
A six sided fairdie is rolled 3 times. Then the probability that the face with the number 6 on it will not face upward onthe three occasions is
The probability that P and Q get the scholarship are 0.6 and 0.8 respectively. Then the probability that exactly one of P. Q gets the scholarship is