Use the formula for the probability of the complement of an event. a coin is flipped 4 times. what is the probability of getting at least 1 tail?

15/16

Step-by-step explanation:

There will be 16 outcomes for 4 coins=2^4

Probability of only head is : P(C)=1/16

P(C) + P(C') = 1

P(C') = 1 - P(C)

P(C') = 1 - 1/16

Take the l.c.m

P(C') = (16-1) / 16

P(C') = 15/16

So the probability of getting at least 1 tail is 15/16

Y = 22

Step-by-step explanation:

use diamond to split 6 and 2

group 6 and 16

take out 2 and 8

and add y and 16

Y = 22