A) 16
B) 18
C) 23
D) 22
Correct Answer: C
Solution :
Given ranking in the row is as follows |
\[\text{Left}\xrightarrow{{}}\overset{\text{Madhu}}{\mathop{10th}}\,\] |
\[\overset{\text{Veena}}{\mathop{9th}}\,\,\xrightarrow{{}}\text{Right}\] |
After interchange. |
\[\text{Left}\xrightarrow{{}}\overset{\text{Madhu}}{\mathop{15th}}\,\] |
We see that interchanging the places rank of Madhu changes 5 places than the previous ranks which implies Veena was at 15th position of the row and adding 8 to the rank of Madhu will give the total number of girls in the row which is |
\[15+8=23\] |
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