Five sacks - 1, 2, 3, 4 and 5 - have different weights. 2 is heavier than 5 but lighter than 1. Only one sack is heavier than 4. 1 is not the heaviest. Which of them is the second lightest?

In a class of 58 students, Tanvi secured the 26th rank from the top. Anaya's rank is one position lower (worse) than Tanvi's rank. Find the number of students who secured a lower rank than Anaya.

Mr. Kell ranked 155th from the bottom and 37th from the top in his class. How many students are there in his class?