Respuesta :

mathmate
Using relationship
P(E or F) = P(E)+P(F)-P(E and F)
Substitute
0.65=0.20+0.55-P(E and F)
solve for 
P(E and F)=0.20+0.55-0.65=0.10

The probability of the indicated event P(E and F) is 0.10 .

What is probability?

Probability is the chance of happening an event or incident.

Given, P(E) = 0.20

P(F) = 0.55

P(E or F) equals = 0.65

We know,

P(E or F) = P(E) + P(F) - P(E and F)

⇒ 0.65 = 0.20 + 0.55 - P(E and F)

⇒ P(E and F) = 0.20 + 0.55 - 0.65

⇒ P(E and F) = 0.10

Learn more about probability here: https://brainly.com/question/7218645

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