<span>
The probability of at least three heads can be found by<span><span>∑<span>k=3</span>4</span><span>(<span>4k</span>)</span><span>.5k</span><span>.5<span>4−k</span></span>=<span>516</span></span></span>
Where is the photo u forgot it
Answer:
210.
Step-by-step explanation:
Combination formula is

Then, we have that n = 10 and r=6:


To simplify calculus, we are going to use that n! = (n-1)!n = (n-2)!(n-1)n and so on.




