In a gas-powered lawnmower, the gas in the cylinder will not ignite (and mower will not start) if either the spark plug fails or magneto fails. Suppose that the spark plug fails with probability 0.05 and the magneto fails with probability 0.02 and that these things fail independently.
Find out the probability that the mower starts up.
1. 0.999
2. 0.93
3. 0.07
4. 0.95
5. None of these