Which of the following sentences are statements? What are your doing?

Which of the following sentences are statement? Give reason for your answer. Mathematics is difficult

Which of the following sentences are statement? Give reason for your answer. Answer this question

Which of the following sentences are statement? Give reason for your answer. How far is chennai from here.

Which of the following sentences are statement? Give reason for your answer. The sum of 5 and 7 is greater than 10

Which of the following sentences are statement? Give reason for your answer. The square of a number is an even number

Which of the following sentences are statement? Give reason for your answer. The sides of a quadrilateral have equal length

Which of the following sentences are statement? Give reason for your answer. The product of (-1) and (8) is 8

Which of the following sentences are statement? Give reason for your answer. The sum of all interior angles of a triangles is 180^@

Which of the following sentences are statement? Give reason for your answer. Today is a windy day