State which of the following events are independent. Give reasons for your answer:
`E_1`: '2 tails on first throw'
`E_2`: '2 heads on second throw' in two successive throws of two coins.

State which of the following events are independent. Give reasons for your answer: E_1 : 'a total of 9 on first throw' E_2 : 'a total of 9 on second throw' in two successive throws of a pair of dice.

State which of the following events are independent. Give reasons for your answer: E_1 : 'an even number on first throw' E_2 : 'a number multiple of 3 on second throw' in two successive throws of a dice.

State whether the following statement is true or false. Give reasons for your answers. The sum of two odd numbers is odd.

State whether the following statement is true or false. Give reasons for your answers. The sum of two even numbers is even.

Which is greater?Give reason for your answer. 1.23 or 1.2

State which of the following are equations(with a variable).Give reason for your answer.Identify the variable from the equations with a variable. 2n + 1 = 11

State which of the following are equations(with a variable).Give reason for your answer.Identify the variable from the equations with a variable. 4/2 = 2

Which of the following arguments are correct ? Give reasons for your answer : If two coins are tossed simultaneously there are three possible outcomes - two heads, two tails or one of each. Therefore, for each of these outcomes, the probability is 1/3 .

Which of the following expressions are polynomials in one variable and which are not? State reasons for your answer:- y^2+sqrt2