A Man and his wife have three sons. What is the probability that their next child will be a girl? 50%
50%

75%
75%

100%
100%

25%
25%

75%

Explanation:

3 100% boys, next a girl is 75%

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when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.