Explanation:

Since probabilities of failure for engines E, F and G I.e P(E), P(F), and P(G) are 0.02,0.01 and 0.04 respectively.

The airplane will crash only when all three engines fail.

So, probability that it crashes =P(E).P(F).P(G)

=0.02×0.01×0.04

=0.000008

Hence the probability that the airplane will not crash=1-0.000008

=0.999992