MCQ
If $7\text{x}+3<5\text{x}+9$ then $\text{x}\in$
- A$\big(-\infty, 3\big]$
- B$\big(-\infty,\infty\big)$
- C$\big(-\infty, 3\big)$
- D$\big[3,\infty\big)$
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If the probability of A to fail in an examination is $\frac{1}{5}$ and that of B is$\frac{3}{10}$Then, the probability that either A or B fails is