26.Two dice are thrown, the ptobability that the sum of the points on the dice is 7, is

27.The probability of guessing correctly at least 8 out of 10 answers on a true-false examination is

28.Six boys and six girls sit in a row at random. The probability that boys and girls sit alternately, is

29.A speaks the truth in 60 % cases and B in 70 % cases. The probability that they will say the same thing while describing a single event is