A student scoring 20% marks in an examination fails by 30 marks. but another student who got 32% marks , gets 42 marks more than the required marks to pass . Find the maximum number of digits.

Preeti secured 35 marks out of 40 in Mathematics and 25 Marks out of 30 in Science

A student multiplied a number by $$\frac 27$$​ instead of $$\frac 57$$​. What is the percentage of error?

Kalpana and Sudha got 621 and 522 marks, respectively, in the same examination. If Kalpana scored 69% marks, then what is the percentage of marks scored by Sudha?​

Kalpana and Sudha got 656 and 697 marks, respectively, in the same examination. If Kalpana scored 32% marks, then what is the percentage of marks scored by Sudha?​

The number of students in a school increases every year by 5%. If the number of the students in 2023 is 5,670, what was the number of students in 2022?

A candidate scores 25% marks and fails by 68 marks, while another candidate, who scores 50% marks, gets 42 marks more than the minimum required marks to pass the examination. Find the maximum marks for the examination.