in a class 4 boys and 3 girls from this we name
a group of 3 student then find the probability
of the following
1) in agroup 2 boys and 1 girl
2) in a group only girl
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The lungs and respiratory system allow us to breathe. They bring oxygen into our bodies (called inspiration, or inhalation) and send carbon dioxide out (called expiration, or exhalation). This exchange of oxygen and carbon dioxide is called respiration.
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