A student is studying mathematics and chemistry. The probability that he passes mathematics is 0.75, the probability that he fails chemistry is 0.2, and the probability that he passes mathematics but fails chemistry is 0.05.Find the probability that he either passes mathematics or fails chemistry.
A. 1.0
B. 0.90
C. 0.15
D. 0.95
E. none of these
Answer: B
Mathematics
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A. 73.5 B. 0.33 C. 84 D. 12
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Write the number without exponents.3.287 × 10-6
A. -3,287,000 B. 0.0000003287 C. 0.00003287 D. 0.000003287
Mathematics