কয়েন নিক্ষেপ 1


In a coin toss, the probability of head is $\frac14$. The coin is tossed $n$ times. If the probability of head appearing $2$ times is equal to that of appearing $3$ times, find the value of $n$.

Probability  


  0 Upvote                    0 Downvote

Statistics



Attempt 471


Solve 222


First Solve judge_1