If number of coins earned in `n^(th)` game is `n2^(n+2)-2^n` and total number of coins coins earned its first 10 games is `10(B.2+1)`, where `B in N,` then the value of `B` is

If one coin is tossed n times (or n coins tossed once), then the number of elements in the sample space is

If 2<=a<=5 where a in N and 5<=b<=10 where b in N then minimum value of (2a)/(a+b)

if n is a set of prime numbers then the value of 10 U n = 2 A n =

Ashok had a total of ₹ 60 in the form of ₹ 5 coins, ₹ 2 coins and ₹ 1 coins. The number of ₹ 2 coins is twice that of ₹ 5 coins and the number of ₹ 1 coins is thrice that of ₹ 5 coins. Find the number of ₹ 1 coins with him. '

A bag contains (2n+1) coins. It is known that n of these coins have a head on both sides whereas the rest of the coins are fair. A coin is picked up at random from the bag and is tossed. If the probability that the toss results in a head is (31)/(42) , determine the value of n .

A bag contains (2n+1) coins. It is known that n of these coins have a head on both sides whereas the rest of the coins are fair. A coin is picked up at random from the bag and is tossed. If the probability that the toss results in a head is (31)/(42) , determine the value of n .

A bag contains (2n + 1) coins. It is known that n of these coins have a head on both sides whereas the rest of the coins are fair. A coin is picked up at random from the bag and is tossed. If the probability that the toss results in a head is (31)/(42) , then determine the value of n.

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 person is permitted to select at least one and at most n coins from a collection of (2n+1) distinct coins. If the total number of ways in which he can select coins is 255, then find the value of n.