The multiplicative inverse of something is a fancy way to say reciprocal.
A reciprocal is a fancy way to describe the action of flipping the fraction.
So flip 35/9 to get 9/35.
That's the multiplicative inverse.
Let x be the number of bracelets you can make
Amount of yarn needed = 100x
There are 2^3 possible combinations
So
P (getting no tails) = 1/2 * 1/2 * 1/2 = 1/8 as each time there is 1/2 chances of getting a heads
