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In a row 'A' is in the 11th position from the left and 'B' is in the 10th position from the right. If 'A' and 'B' interchange, then 'A' becomes 18th from the left. How many persons are there in the row other than 'A' and 'B'?
- a)27
- b)26
- c)25
- d)24
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
In a row 'A' is in the 11th position from the left and 'B&...
Here is the arrangement as per the question: 10 people - A – ‘x’ people in between – B - 9 people.
OR
10 people – B – ‘x’ people - A - 9 people.
Now,
10 + 1 + x = 17. X = 6. Total people other than A and B = 10 + 6 + 9 = 25.
OR
10 people – B – ‘x’ people - A - 9 people.
Now,
10 + 1 + x = 17. X = 6. Total people other than A and B = 10 + 6 + 9 = 25.
Most Upvoted Answer
In a row 'A' is in the 11th position from the left and 'B&...
A was at 11th position from right... therefore when changed became 18th from left then by simple calculation 17 people from left and 9 from right it's 26 people excluing A and B
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Community Answer
In a row 'A' is in the 11th position from the left and 'B&...
Given Information:
- A is in the 11th position from the left.
- B is in the 10th position from the right.
- When A and B interchange, A becomes 18th from the left.
To find:
- The number of persons in the row other than A and B.
Solution:
First, let's analyze the given information and find the initial positions of A and B in the row.
Position of A from the left = 11
Position of B from the right = 10
We know that the total number of persons in the row is the sum of the positions of A from the left and B from the right, plus 1 (to include A and B).
Total number of persons = Position of A from the left + Position of B from the right + 1
= 11 + 10 + 1
= 22 + 1
= 23
So initially, there are 23 persons in the row.
Now, when A and B interchange, A becomes 18th from the left. We can use this information to find the new position of B from the right.
New position of A from the left = 18
To find the new position of B from the right, we subtract the new position of A from the total number of persons in the row, and then add 1 (to include A and B).
New position of B from the right = Total number of persons - New position of A from the left + 1
= 23 - 18 + 1
= 5 + 1
= 6
Therefore, the new position of B from the right is 6.
Now, to find the number of persons in the row other than A and B, we subtract the positions of A and B from the total number of persons in the row.
Number of persons in the row other than A and B = Total number of persons - Position of A from the left - Position of B from the right
= 23 - 11 - 6
= 23 - 17
= 6
Hence, there are 6 persons in the row other than A and B.
Therefore, the correct answer is option 'C' (25).
- A is in the 11th position from the left.
- B is in the 10th position from the right.
- When A and B interchange, A becomes 18th from the left.
To find:
- The number of persons in the row other than A and B.
Solution:
First, let's analyze the given information and find the initial positions of A and B in the row.
Position of A from the left = 11
Position of B from the right = 10
We know that the total number of persons in the row is the sum of the positions of A from the left and B from the right, plus 1 (to include A and B).
Total number of persons = Position of A from the left + Position of B from the right + 1
= 11 + 10 + 1
= 22 + 1
= 23
So initially, there are 23 persons in the row.
Now, when A and B interchange, A becomes 18th from the left. We can use this information to find the new position of B from the right.
New position of A from the left = 18
To find the new position of B from the right, we subtract the new position of A from the total number of persons in the row, and then add 1 (to include A and B).
New position of B from the right = Total number of persons - New position of A from the left + 1
= 23 - 18 + 1
= 5 + 1
= 6
Therefore, the new position of B from the right is 6.
Now, to find the number of persons in the row other than A and B, we subtract the positions of A and B from the total number of persons in the row.
Number of persons in the row other than A and B = Total number of persons - Position of A from the left - Position of B from the right
= 23 - 11 - 6
= 23 - 17
= 6
Hence, there are 6 persons in the row other than A and B.
Therefore, the correct answer is option 'C' (25).
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In a row 'A' is in the 11th position from the left and 'B' is in the 10th position from the right. If 'A' and 'B' interchange, then 'A' becomes 18th from the left. How many persons are there in the row other than 'A' and 'B'?a)27b)26c)25d)24Correct answer is option 'C'. Can you explain this answer?
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In a row 'A' is in the 11th position from the left and 'B' is in the 10th position from the right. If 'A' and 'B' interchange, then 'A' becomes 18th from the left. How many persons are there in the row other than 'A' and 'B'?a)27b)26c)25d)24Correct answer is option 'C'. Can you explain this answer? for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about In a row 'A' is in the 11th position from the left and 'B' is in the 10th position from the right. If 'A' and 'B' interchange, then 'A' becomes 18th from the left. How many persons are there in the row other than 'A' and 'B'?a)27b)26c)25d)24Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In a row 'A' is in the 11th position from the left and 'B' is in the 10th position from the right. If 'A' and 'B' interchange, then 'A' becomes 18th from the left. How many persons are there in the row other than 'A' and 'B'?a)27b)26c)25d)24Correct answer is option 'C'. Can you explain this answer?.
In a row 'A' is in the 11th position from the left and 'B' is in the 10th position from the right. If 'A' and 'B' interchange, then 'A' becomes 18th from the left. How many persons are there in the row other than 'A' and 'B'?a)27b)26c)25d)24Correct answer is option 'C'. Can you explain this answer? for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about In a row 'A' is in the 11th position from the left and 'B' is in the 10th position from the right. If 'A' and 'B' interchange, then 'A' becomes 18th from the left. How many persons are there in the row other than 'A' and 'B'?a)27b)26c)25d)24Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In a row 'A' is in the 11th position from the left and 'B' is in the 10th position from the right. If 'A' and 'B' interchange, then 'A' becomes 18th from the left. How many persons are there in the row other than 'A' and 'B'?a)27b)26c)25d)24Correct answer is option 'C'. Can you explain this answer?.
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