If he does three hours, its 9 strips, for four, its 12, six is 18, seven is 21, and nine is 27
The answers is 14 if you follow the equation i just did it on a calculator (attached)
The area is 645504 square feet
In this item, it is not given that there has to be specific arrangement or order as to how the questions are going to be answered. Hence, the concept that can be used in order to answer this item is the concept of combination which states that,
nCr = n! / (r!)(n - r)!
This is read as "combination of n taken r". In this item, n = 10 and r = 4. Substituting the known vaues to the equation,
10C4 = (10!) / (4!)(10 - 4)!
10C4 = 210
Therefore, the number of which is which the questions can be answered is 210.
Answer:it is c
Step-by-step explanation:
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