## ParthKohli 3 years ago Probability.

1. ParthKohli

I seem to be getting $$\frac{3}{8}$$, so $$11$$, but it is wrong.

2. ParthKohli

@shubhamsrg I see that you have solved this problem.

3. hartnn

how come denominator = 8 ??

4. hartnn

its given that at least one flip results in a head

5. hartnn

so, denominator = 8 - [TTT] = 7

6. ParthKohli

lol, oh yes.

7. hartnn

so, 3/7 ...and 10

8. anonymous

yeah its correct

9. ParthKohli

Of course it is. :-)

10. shubhamsrg

How did you get to know that I solved it ?

11. ParthKohli

@shubhamsrg You were on the list. :-)

12. shubhamsrg

ohh. :P I recently joined the site. hmm Am stuck on one last question at the moment, giving it a try.

13. ParthKohli

I got it right :-)

14. hartnn

which site ?

15. shubhamsrg

The cosine rule one ?

16. shubhamsrg

brilliant.org

17. shubhamsrg

I am posting that question on maths section, unable to do it till now.

18. ParthKohli

Cosine rule? There was no such problem.