Crossword

1. ----- greatest mathematician also known as father of geometry
3. - for any two numbers,HCF x LCM = --------- of the numbers
7. A number that can only be factored as one times itself is called -------------
9. -----another name for HCF
13. it is a series of well defined steps which gives a procedure for solving a type of problem
15. The -------------------- of two numbers is the smallest number that is a multiple of both.
16. line have a unique solution
18. numbers which can be expressed in the form p/q where q=/0 are called ----- numbers
19. decimal expansion of an ----------- number is non terminating and non recurring

2. numbers which have factors other than one or the number itself
4. lines have infinetly many solutions
5. --- the decimal expansion of rational numbers is terminating if the ------- has 2 & 5 as its only factors.
6. ---------- a number which is also known as aliquot sum
8. – Number of solutions for inconsistent pair of lines
10. ----------- it is a method in which we eliminate one variable first to get linear equation in one variable.
11. A ---------------number will have a finite number of digits.
12. numbers which consist of rational and irrational numbers are called ------------------
14. – the largest common factor of two or more numbers is called -----
17. lines have no solution
20. it is a proven statement used for proving other statements