3
Q:
A) 17 | B) 18 |
C) `19 | D) 20 |
Answer: A) 17
Explanation:
Explanation:
The fence will consist of one more post than there are chains. (e.g. P-c-P-c-P).
Therefore, a total length has to be a multiple of the length of the chain plus one post (5.5) plus one post extra.We have length = (5.5n + 0.5), where n can be any positive whole number. If n= 3, length =17