In a row of trees, a tree is 7th from left end and 14th from right end. How many tree are there in the row ?
A. 18
B. 19
C. 20
D. 21
Answer: Option C
Solution(By Examveda Team)
Total number of trees, = 7+14-1 = 20This Question Belongs to Competitive Reasoning >> Puzzle
How there are 20 trees
Simple
It says 7 from left
Soo
1 2 3 4 5 6 7
And then 14 from right
20 19 18 17 16 15 14 13 12 11 10 9 8 7
So therefore 7 is counted twice
That's why subract 1
in MSword you can force a page break
why subtracted 1
st upon
the total row is like
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
in the above row 7 is the position of left side and 7 is also a position of 14 to right side so ans will be 20
why you have deducted 1 from 21 ?????
plz any can tell me how 20 ans came............... with brief description