angle BCA should be the same as angle CAD -> 20°
4 x 22 =?
the question mark is how old they'll be.
Both the heads and tails will have a probability of 0.5 with a fair coin. ... TO find probability that foe the 7th toss head appears exactly 4 times.
I honestly don't know if this is correct but it might be i think its the middle one y=f(x)=x to the second power
