A fair coin is tossed a large number of times. Assuming the tosses are independent which one of the following statement, is True?

A fair coin is tossed 6 times .The variance of number of heads is

A fair coin is tossed 10 times. Find the probability of at most 6 heads .

A fair coin is tossed three times . The probability that there is atleast one tail is

A fair coin is tossed three times . The probability that there is atleast one tail is

A fair coin is tossed 2n times. The change that number of times one gets head is not equal to the number of times one gets tail is

If a fair coin is tossed 8 times. Find the probability of at least five heads.