Answer:
4
Explanation:
You want the product of terms (n+1)/n for integers n from 1 to 3.
Product
When there are only 3 terms, we can write out the product:
(1 +1)/1 × (2 +1)/2 × (3 +1)/3 = 2 × 3/2 × 4/3 = 4
The product is 4.
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Additional comment
You will notice the first term has a denominator of 1. In each pair of terms, the numerator of a term cancels the denominator of the next term. This means the product of k terms will always be (k+1). For 3 terms, the product is 3+1 = 4.
Apparently, the answer in each case is the hour number.
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