Question

in fair at a game stall slips marked with number 3, 3, 5, 7, 7, 7, 9, 9, 9, 11 are placed in a box .A person wins if the mean of a number are written on the slip .what is the probability of his losing the game.

Answer 1

MEAN OF THE DATA IS 7
SO
N ( E) IS 7
N(S) IS 10
P (E)7/10