# Probability Problems Solving -When Two Coins are Tossed 500 Times

**In previous video lesson of Probability we learned to find the find the probability of a coin tossed for 1000 times.**

** Now in this video lesson of Probability we are going to probability for tossing two coins together for 5000 times.**

** This is looking a little bit different than previous one but not exactly it is also almost same as before. How to do and what to do this problem of probability?**

** So let’s start our lesson.**

** How was it dear?**

** The question is here in the image of probability**

** Question is asking what is the probability for the event “Two heads” , Probability for “One Head” & Probability for “No head”**

** Steps to Solve the Problem**

** 1. Use the formula of probability for calculating probability of Two heads as given,**

** Probability of getting two head, P (two head) = No. of trials in which we got Two head / Total number of trials.**

** Or. P (Two heads) = 105/500 = 0.21 = 21%**

** 2. Use the probability formula for calculating the probability of getting “one Head” like this,**

** Probability of getting one head, P (One Head) = No. of trials in which we got one head/ Total number of trials**

** Or P (One Head) = 275 / 500 = 0.55 = 55%**

** 3. Use the formula of Probability for calculating the probability for getting “No Head”. It simply means probability of getting two Tails together.**

** Probability of getting No head, P (No head) = No. of trials in which we get No heads / Total number of trials**

** Or, P (No head) = 120 / 500 = 0.24 = 24 %**

** Well dear we have to solve like above. And you finally what we will get-**

** Sum of all probabilities (P) = P (Two head) + P (one head) + P (No head) = 1 = 100%**

** Wanna try to sum! Okay**

** P = 0.21 + 0.55 + 0.24 = 1**

** Or, P = 21% + 55% +24 % = 100 %**

** Okay, friend we will meet in next video lesson of probability **

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