Distributions help question

If 5 electronic componets are tested and each has a provbability of being defective, what is the probability that the first 3 componets will be tested to be ok before a defective component is discovered?

A. .1024

B. .0892

C. .1280

D. None of the above

I have all these different formulas and tables but I am not quite sure what to use.

I have all these different distribution equations and tables. But again don't know what to use. Please tell me what kind of distribution it is and why

We primarily only studied distributions and have a test.

Re: Distributions help question

Hey bustacap09.

Hint: Think in terms of P(X0 = 1, X1 = 1, X2 = 1, [X3 = 1 OR X4 = 1]) and remember when A and B are independent, then P(A and B) = P(A)P(B)