NCERT class 10 maths chapter 1 Real Numbers
Question 1:Without actually performing the long division, state whether the following rational numbers will have a terminating decimal expansion or a non-terminating repeating decimal expansion: (i) 13 3125 (ii) 17 8 (iii) 64 455 (iv) 15 1600 (v) 29 343 (vi) 3 2 23 2 5 (vii) 2 7 5 129 2 5 7 (viii) 6 15 (ix) 35 50 (x) 77 210
Exercise 1.4 maths class 10 Chapter 1 Real Numbers
Question 2:Write down the decimal expansions of those rational numbers in Question 1 above which have terminating decimal expansions.
Question 3:The following real numbers have decimal expansions as given below. In each case, decide whether they are rational or not. If they are rational, and of the form , p q what can you say about the prime factors of q? (i) 43.123456789 (ii) 0.120120012000120000. . . (iii) 43.123456789