What can you say about the prime factors of their denominators ? (i) 12.123456789 (ii) `12.bar(123456789)`

Show that each of the following numbers is rational. What can you say about the prime factors of their denominators ? (i) 23.123456789 (ii) 32. overline(123456789)

What can you say about the prime factorisation of the denominators of the rational number 0.bar(1347)

What can you say about the resistance of an ammeter?

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 ? (1) 43.123456789 (2) 0.120120012000120000 (3) 43.bar123456789

What can you say about the resistance of a voltmeter?

What can you say about the prime factorisations of the denominators of the following rationals:

What can you say about the prime factorisations of the denominators of the following rationals:

What can you say about the set, A,B,if A\\B =phi

What can you say about the prime factorisations of the denominators of the following rationals: (i) 43.123456789 (ii) 43. 123456789 (iii) 27.\ 142857 (iv) 0. 120120012000120000 dot