A coin is tossed four times. What is the probability of getting tails four times in a row?

11/16

Step-by-step explanation:

P(TTHH) = 4C2*(1/2)^4 = 4!/2!*2!*(1/2)^4=6/16  

Total Probablity = 1/16 + 4/16 + 6/16

=11/16

so, converting firstly the mixed fractions to improper fractions and then "adding".

the answer is:

the correct option is the option b.

to calculate the surface area of the right cylinder, we need to use the following formula:

from the picture we know that:

so, substituting and calculting we have:

hence, we have that the correct option is the option b.

have a nice day!