The probability that both of them will play soccer is
=0.3×0.4=0.12
The probability that Martha or Ayyantu or both will play soccer is
=0.3+0.4−0.3×0.4=0.3+0.4−0.12=0.58
The probability that both Martha and Ayyantu will not play soccer is
=1−0.58=0.42
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