7. A signal can be formed by running different colored flags up a pole, one above the other. Find the number of different signals
consisting of 7 flags that can be made if 3 of the flags are white, 3
are red, and 1 is blue.
A) 15
B) 9
C) 140
D) 35

Adrawer contains 12 identical white socks, 18 identical black socks and 14 identical brown socks. what is the least number of socks you must choose, without looking, to be certain that you have chosen two socks of the same colour?

Adoctor administers a drug to a 38-kg patient, using a dosage formula of 50 mg/kg/day. assume that the drug is available in a 100 mg per 5 ml suspension or in 500 mg tablets. a. how many tablets should a 38-kg patient take every four hours? b. the suspension with a drop factor of 10 ggt/ml delivers the drug intravenously to the patient over a twelve-hour period. what flow rate should be used in units of ggt/hr? a. the patient should take nothing pills every four hours. (type an integer or decimal rounded to the nearest hundredth as needed.)

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class