A die is through` (2n+1)` times the probability of getting 1 or 3 or 4 at most n times is

A die is thrown 31 times. The probability of getting 2,4 or 5 at most 15 times is

A die is thrown 4 xx.Find the probability of getting at most two 6.

A die is thrown for times .The probability of getting perfect square in at least one throw is

A die is rolled n times. If the probability of getting odd number 2 times is equal to the probability of getting even number 3 times. Find the probability of getting odd number odd times

A fair die is thrown n times. The probability of getting an odd number twice is equal to that getting an even number thrice. The probability of getting an odd number, odd number of times is

If a die is thrown 7 times, then the probability of obtaining 5 exactly 4 times is