Question

Which of the following is correct:

Maximum number of people 'is'
answering this.

(or)

Maximum number of people are answering this.

Answer 1

In this sentence the use of "is" is incorrect, instead of "the maximum number of people is answering this"  it should be "the maximum number of people are answering this"

Answer 2

It would be 'Maximum number of people ARE answering this.'

Why?

Because the subject of the sentence, people, is plural. If this was a singular subject/noun, then 'IS' would suffice.

Hope this helped and have a good day!