: One of your friends thinks she is pregnant. Write a short letter to her and inform her about the dangers of using tobacco, alc
2 answers:
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Answer:
d.
Explanation:
The keywords <em>how</em><em> </em><em>many</em><em> </em><em>ways</em>,<em> </em>signal combinations, especially since order does <em>not</em> matter, so we use the combination formula:
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* This is mathematics, not <em>health</em>.