Some people sitting in a row. Madhu is sitting at $$15^{th}$$ position from left to right in the row. Mahima is sitting at $$17^{th}$$ position from right to left in the row. Ravi is sitting exactly in the middle of Mahima and Madhu, and his position is 24 from the right to left. How many people are there in the row?

Ravi is sitting at 24th position from the right, and Mahima is sitting at 17th position from the right. 
There are 6 people sitting between Ravi and Mahima. 
Ravi is sitting exactly between Mahima and Madhu, this means that Madhu must be 6 seats away from Ravi, or on the 31st seat from the right. 
Now, this 31st seat from the right is 15th seat from the left, meaning that there are 14 people left of Madhu, making the total number of seats to be 31+ 14 = 45

Therefore, option C is the correct answer.