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If E1 and E2 are two events associated w...

If `E_1 and E_2` are two events associated with a random experiment such that `P (E_2)=0.35, P (E_1 or E_22)=0.85 and P(E_1 and E_2)=0.15,` then `P(E_1)` is (A) `.25` (B) `.35` (C) `.65` (D) `.75`

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