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Across 1. 22/7(pi) is an__________ number. 4. The size or ___________ of a finite set is a natural number. 6. A negative integer corresponding to a positive one on the real number line is called the positive ones' _______ 7. All counting numbers include_______ numbers. 9. The __________ of 2 is an irrational number. 12. 7/13 is a ________. 13. Negative numbers and whole numbers together form ________. 14. 2,3,5,7 and 11 are _____ numbers. 16. An _________ number is any number that is a root of a non-zero polynomial with rational coefficients. 18. Corresponding to every +ve whole number on the real number line there is a ________ additive inverse. 19. First(1st), second(2nd) and third(3rd) are the first three _______ numbers. 20. An alternative word for exponent is _____.

Down 2. A real or complex number is called a ______________ number if it cannot be found as a result of an algebraic equation with integer coefficients. 3. Zero along with counting numbers constitute_____numbers. 5. The ____ number line has both rational and irrational numbers on it. 8. The set of all ________ numbers is collectively denoted by Q. 10. A number whose square is a negative real number is _________. 11. The square of i .i.e. i*i =________. 15. Multiplying a number by itself gives you its ______. 17. A new entity obtained when real and imaginary numbers come together are called _______ numbers.