Two fractions equivalent are 18/20 & 27/30
Answer:
5
Step-by-step explanation:

Answer:
well... x is 35 if that's what your'e asking :)
Step-by-step explanation:
Probability a gets a head = 1/2
.. .. .. b .. .. ... .. = P(a gets tail) * 1/2 = 1/2 * 1/2 = 1/4
.. ... . .. c .. .. .. .. . = P(and and b gets tail) * 1/2 = 1/4 * 1/2 = 1/8