Is it ok if i give these quizzes to my younger brother for him to practice drawing flowcharts for if-else statements?

Sorry if this question is weird.

I wonder if these question suitable for a newbie, he is a first-year undergraduate student.

I feel worry so i need help. These questions are from a book.

1. Draw a flowchart to represent the logic for a program to convert decimal to binary.

2. Draw the flowchart to represent the logic for a program to find all prime number less than a given integer N.