In a line of boys, Ganesh is 12th from the left and Rajan is 15th from the right. They interchange their positions. Now, Rajan is 20th from the right. What is the total no. of boys in the class?
Correct Answer: 31
Explanation:
Total students = [ First position of Ganesh + Second position of Rajan ] –1
Total students = [12 + 20] – 1 = 31
