A shop sells 10 tube lights out of which 3 are defective. Salman buys four tube lights. Find the probability that all of Salman’s tube lights work.

A shop sells 10 tube lights out of which 3 are defective. Salman buys

1.	A shop sells 10 tube lights out of which 3 are defective. Salman buys four tube lights. Find the probability that all of Salman’s tube lights work.
A.	1 15
B.	1 25
C.	1 30
D.	1 35
E.	None of these
Answer» F.

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