For the following questions answer them individually
The arithmetic mean of 28, 32, 34, 24, 42, 46, 38, 36 is
The median of 18, 16, 18, 12, 10, 14, 16 is
The mode of the following frequency distribution is
The standard deviation of 6, 7, 8, 9, 10 is
The standard deviation of any three consecutive integers is
If $$d_i$$ stands for the difference of ranks and if $$\sum_{i = 1}^n d_i^2 = \frac{(n - 1)n(n + 1)}{8}$$, then the value of the
coefficient of rank correlation is
A problem in Mathematics is given to three students A, B and C whose chances of solving it are $$\frac{1}{3}, \frac{1}{4}$$ and $$\frac{1}{2}$$ respectively. What is the probability that the problem will be solved by at least one of them?
If a card is drawn at random form a well shuffled pack of 52 cards, then the probability that it is a spade or a king is
The probability that a non-leap year has 53 Mondays is
A and B are two sets such that n(A) = 3 and n(B) = 2. If a relation from A to B is selected at random, then the probability that the relation will be a function is