If   be a rational number. Such that the prime factorisation ofq is not of the form 2ⁿ5^m, where n, m are non-negative integers. Then x has a decimal expansion which is non-terminating repeating. Is this statement true ?

The following real numbers have decimal expansions as given below. In each case, Find whether they are rational or not.

(i) 43.123456789    (ii) 0.101001000 ....

Use Euclid’s division algorithm to find the HFC of 867 and 255