During the month of february fabulous feet shoe mart sold 50 pairs of red bow first after an ad campaign to boost sales they sold 60 pairs in march find the percent of increase in sales 20% 23% 12% 15%

F. a fair coin is thrown in the air four times. if the coin lands with the head up on the first three tosses, what is the probability that the coin will land with the head up on the fourth toss? a. 0 b. 1/16 c. 1/8 d. 1/2