Answer:

Step-by-step explanation:
When I toss a coin, then probability getting head or tail on tossing will be 50 : 50 or 
Similarly when we spin a spinner, total number of events n (s) = 4
and favorable event n(E) to get 4 is 1
Therefore, probability of getting 4 in one spin = 
= 
Now we have to calculate the probability of getting tails and spinning a 4 will be
p =
× 
p = 