Write the negation of the following statement:-All birds sing.

Write the negation of the following statements : All triangles are not equilateral triangle .

Write the negation of the following. 11 20

Write the negation of the following statement: All primes are odd.

Write the negation of the following statement: All cats scratch.

Write the negation of the following statement: all triangles are not equilateral triangles.

Write the negation of the following statements : All students study mathematics at the elementary level.

Write the negation of the following statement: All mathematicians are man.

Write the negation of the following statement: All policemen are thieves.

Write the negation of the following statement: Ravish is honest.

Write the negation of the following statements: (i)All students live in the dormitories (ii)Some students are 25 (years) or older.