Class X all example's of ncert book

               Chapter-1 Real Numbers
1.Use Euclid's algorithm to find the H.C.F. of 4052 and 12576
2. Show that every positive even integer is of the 2q, and that every positive odd integer is of the form 2q+1, where q is some integer
3. Show that any positive odd integer is of the form 4q+1 or 4q+ 3 , where q is some integer
4. A sweetseller has 420 kaju , barfis and 130 badam barfis . She wants to stack them in such away that each stack has the same number , and they take up the least area of the tray. What is the number of that can be placed in each stack for this purpose
5. Consider the numbers 4 ki power n, where n is a natural number. Check whether there is any value of n for which 4 ki power n ends with the digit zero.
6. Find the L.C.M. and H.C.F. of 6 and 20 by the prime factorisation method.
7. Find the H.C.F. of 96 and 404 by the prime factorisation method Hence,find their L.C.M.
8. Find the  L.C.M. and H.C.F. 6 ,72 and 120, using the prime factorisation method
9. Prove that √3 is irrational.
10. Show that 5-√3 is irrational.
11. Show that 3√2 is irrational.                                                    Chapter-2 Polynomials
1. Look at the graphs in fig given below . Each is the graph of y = p(x), where p(x) is a polynomial. For each of the graphs, find the no.  Of acres of p(x)