Probability of No girl

The number of children in a family of a certain region may be 0, 1 or 2 with probabilities 0.2, 0.3 and 0.5 respectively. The probability of each child being a boy or girl is 0.5, then what is the probably (percentage) that a family randomly chosen has no Girl child?

51.8 15.3 47.5 30.2

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