Question

5. 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 , what can you say about the prime factors of q?
(1)28.123456789…….
(2) 74.2854623156……..
(3)87.123456789

6. SHOW THAT(5- √) IS A IRRATIONAL.

7. Show that 3 √ is irrational

Answer 1

Step-by-step explanation:

28.123456789..... is irrational

74.2854623156...... is irrational

(1) and (2) because they are non reapting and non terming so (1) and (2) are irrational numbers

87.123456789 is rational because it is terminating