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July 23rd, 2019, 05:49 AM  #1 
Senior Member Joined: Aug 2014 From: India Posts: 458 Thanks: 1  How total is 47?
In a row, Radha is 17th from the left end. Pintu is 24th from the right end of the row when they interchange their positions. Pintu becomes 31st from the right. Find (i) Total Total is 47. I didn't understand this position type problem. 
July 23rd, 2019, 06:08 AM  #2 
Senior Member Joined: Apr 2014 From: UK Posts: 953 Thanks: 340 
When they swap position, Pintu is both 31st from the right and 17th from the left, so there are 47 positions.

July 23rd, 2019, 06:35 AM  #3 
Senior Member Joined: Aug 2014 From: India Posts: 458 Thanks: 1  
July 23rd, 2019, 07:25 AM  #4 
Global Moderator Joined: Dec 2006 Posts: 20,921 Thanks: 2203 
As there is a position that is both 17th from the left end (where the left end is position 1) and 31st from the right end, the number of positions is 17 + 31  1 = 47.

July 23rd, 2019, 08:46 AM  #5 
Senior Member Joined: Aug 2014 From: India Posts: 458 Thanks: 1 
After interchanging; Radha is 24th from the right end; 47 – 24 + 1 = 22th from Left side?

July 23rd, 2019, 11:18 PM  #6 
Senior Member Joined: Apr 2014 From: UK Posts: 953 Thanks: 340 
47  24 + 1 = 24

July 24th, 2019, 09:06 PM  #7 
Global Moderator Joined: Dec 2006 Posts: 20,921 Thanks: 2203 
For 47 positions, the 24th position from the right end is also the 24th position from the left end.


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