Question

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 canyou say about the prime factors of q?
(i) 43.123456789 (ii) 0.120120012000120000. . .

NCERT Class X
Mathematics - Mathematics

Chapter _Real Numbers

Answer 1

(i) is rational
q contains only 2 and 5 as prime factors.