Question

can anyone explain how this step comes​

Answer 1

Step-by-step explanation:

See , in case it would have been 1 coin tossed once  , then the possible outcomes could have been H or T. But when we toss it three times together, then we get 8 outcomes (2³) . This is so because we have to record observations for the individual tossing of coins three time ,

1) HHH

2) TTT

3) HHT

4) HTT

5) THH

6) TTH

7) THT

8) HTH

Answer 2

Answer:

7/8

Step-by-step explanation:

First you have to know this formula for calculating total outcomes

> 2^n , where n = no. of coins

When we toss one coin  , 2^1 = 2

so the outcomes will be H or T (Heads or Tails)

Now when you toss three coins , n = 3

then, 2^3 = 8

so the outcomes will be:

1) HHH  

2) TTT

3) HHT

4) HTT

5) THH

6) TTH

7) THT

8) HTH

now the questions asks probability of getting not more than 2 heads

take it this way >(you cannot eat more than 2 slice of pizza, so you can eat no pizza or eat one slice or eat two )

ie, no head ,one head and two head is okay

now lets see the no of probable outcomes

1) HHH   (No)

2) TTT    (yes)

3) HHT    (yes)

4) HTT     (yes)

5) THH     (yes)

6) TTH     (yes)

7) THT      (yes)

8) HTH      (yes)

So the probability of getting two heads are = 7/8

Please mark me brainliest, Hope it helps