Examine why they work ?
Choose a number. Double it. Add nine. Add your original number. Divide by three. Add four. Subtract your original number. Your result is seven.

(b) Explain rational number in your own words.

State whether the following statements are true or false. Justify your answers. (iii) Every real number need not be a rational number

Toss a coin for number of times as shown in the table. And record your findings in the table. What happens if you keep on increasing the number of tosses.

Are the following statement true or false? Give reasons for your answers : (i) Every whole number is a natural number. (ii) Every integer is a rational number. ( iii) Every rational number is an integer.

The digits of a positive integer, having three digit number are in A.P. and their sum is 15. The number obitained by reversing the digits is 594 less than the original number. Find the number.

Statement whether the following statement are true or false. Justify your answer. (i) Every irrational number is a real number. (ii) Every point on the number line is of the form sqrtm . where m is a natural number. (iii) Every real number is an irrational number.

Write down any three-digit number (for example, 425). Examine why they work ? Make a six-digit number by repeating these digits in the same order (425425). Your new number is divisible by 7, 11, and 13.

The sum of three numbrs is 6. If we multiply third number by 3 and add second number to itm we get 11 . By adding first and thrid numbers, we get double of the second number. Represent it algebraically and find the number using matrix method

State whether the following statements are true or false. Justify your answers. (i) Every irrational number is a real number.