A coin tossed n times,if the probability that 4,5,6 heads occur are in A P then n

A fair coin is tossed n xx.if the probability that head occurs 6 xx is equal to the probability that head occurs 8 xx,then find the value of n.

A fair coin is tossed n xx.If the probability of getting 4,5 and 6 heads be in A.P.then n is equal to

A fair coin is tossed 10 times. If the probability that heads never occur on consecutive tosses be (m)/(n) (where m, n are coprime and m, n in N ), then the value of (n-7m) equals to :

A coin is tossed n times. The probability that head will turn up an even number of times is

A unbaised coin is tossed n times. If the probability of getting 5 heads is equal to the probability of getting 6 heads then probability of getting 3 heads is

A coin is tossed n times. The probability that head will turn up an odd number of times , is

A coin is tossed (2n+1) times, the probability that head appear odd number of times is

(i) A coin is tossed 7 times. What is the probability that head appears an odd number of times ? (ii) A coin is tossed 7 times. What is the probability that tail appears an odd number of times ? (iii) A coin is tossed 5 times. What is the probability that head appears an odd number of times ?

A fair coin is tossed 12 times. Find the probability that two heads do not occur consectively.

A coin is tossed twice,the probability of getting head both the xx is