In questions 1 to 23, out of the four given options, only one is correct. Write the correct answer.
In question 24 to 40, fill in the blanks to make the statements true:
In question 41 to 55 state whether the given statements are true (T) or false (F).
In questions 56 to 74, choose a letter x, y, z, p etc...., wherever necessary, for the unknown (variable) and write the corresponding expressions:
In questions 75 to 84, change the statements, converting expressions into statements in ordinary language: