In a class of 45, Ranjana’s rank is 15th from first, what is her rank from the last?
Answer & explanation
Correct answer: option 4
Total number of students in the class = 45
Ranjana’s rank from first = 15th
total number of students=first rank +last rank -1
45=15+last rank-1
45+1-15=last rank
31=last rank