In a grade 5 classroom the numbers 1 to 100 are written on

Last updated: 7/9/2022

In a grade 5 classroom the numbers 1 to 100 are written on the chalkboard. The teacher circles 10 numbers at random. What is the expected number of prime numbers that will be circled by the teacher? 5 prime numbers 7.5 prime numbers 10 prime numbers 2.5 prime numbers