Verbal Reasoning - Arithmetic Reasoning - Discussion

Discussion Forum : Arithmetic Reasoning - Section 1 (Q.No. 29)
29.
A farmer built a fence around his square plot. He used 27 fence poles on each side of the square. How many poles did he need altogether ?
100
104
108
None of these
Answer: Option
Explanation:

Since each pole at the corner of the plot is common to its two sides, so we have :

Total number of poles needed = 27 x 4 - 4 = 108 - 4 = 104.

Discussion:
12 comments Page 2 of 2.

Annie said:   8 years ago
Why 4 is subtracted? Please explain it.

Muskan said:   6 years ago
Why is 4 subtracted? Explain it?
(1)


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