Question

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'?

Answer 1

Answer:

27 person in total.

25 person other than a and b.

Step-by-step explanation:

In a row ‘a' is in the 11th position from the left and ‘b' is in the 10th position from the right.

_ _ _ _ _ _ _ _ _ _  a X X X X X b _ _ _ _ _ _ _ _ _

if ‘a' and ‘b' interchange, then ‘a' becomes 18th from the left.

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ a

It means b was also at 18th position from left. That means 17 person in left of b and 9 person in right side of b. i.e. 27 person in total.

So, the arrangement was like:

1 2 3 4 5 6 7 8 9 10 a 12 13 14 15 16 17 b 19 20 21 22 23 24 25 26 27

Answer 2

Answer:

27

Step-by-step explanation:

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