Answer:
128 outcomes
Step-by-step explanation:
No. of outcomes for a coin is given by :
2^n [where n is the number of times a coin is tossed]
=> 2⁷
=> 2 x 2 x 2 x 2 x 2 x 2 x 2
=> 4 x 4 x 4 x 2
=> 16 x 8
=> 128
7 coins are tossed, each coin has two possibilities therefore total number of possibilities are 2^7 = 128. The possibilities of obtaining 4 heads and 3 tails is 7C4 = 7C3 = 35.
