What is the probability of guessing correctly at least 8 out of 10 answer on true-false examination?

The probability of guessing correctly atleast 8 out of 10 answers on a true falsetype examination is

Probability of guessing correctly atleast 7 out of 10 answers in a 'True' or 'False' test is equal to

Find the probability of guessing correctly at least nine out of ten answers in a "true" or "false" objective test.

The probability of answering 6 out of 10 questions correctly in a true or false examination is

What is the value of x, if the probability of guessing the correct answer to a certain test question is x/12 and the probability of not guessing the correct answer to this question is 2/3 ?

A student appeared in an examination consisting of 8 true - false . The student guesses the answers with equal probability . The smallest value of n, so that the probability of guessing at least 'n' correct answer is less than (1)/(2) is

The probability that a student will pass the final examination m both English and Hindi is 0.5 and the probability of passing neither is 0.1. If the probability of passing the English examination is 0.75, what is the probability' of passing the Hindi examination?

The probability that a student will pass the final examination in both English and Hindi is 0.5 and the probability of passing neither is 0.1. If the probability of passing the English examination is 0.75. What is the probability of passing the Hindi examination?

Four persons are asked the same question by an interviewer.If each has independently a probability 1/6 of answering correctly then the probability that at least one of them answers correctly is

The probability of guessing a correct answer is x/12 . If the probability of not guessing the correct answer is 2/3 , then what is x equal to?