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.

Examine whether the follwing sentences are statements or not . Give reasons for your answers . The sum of two natural numbers is a natural number .

(b) Explain rational number in your own words.

Examine whether the follwing sentences are statements or not . Give reasons for your answers . Every prime number is odd .

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.

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.

What are the oxidation number of the underline elements in each of the following and how do your rationalise your results underline (KI_(3))

Examine whether the follwing sentences are statements or not . Give reasons for your answers . The number y is a natural number .

What are the oxidation number of the underline elements in each of the following and how do your rationalise your results underline (Fe_(3))O_(4)

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