J P Mohindru and Bharat Mohindru Solutions for Chapter: Real Numbers, Exercise 5: EXERCISE

Write down the decimal expansion of the rational number $\frac{3}{8}$ by writing its denominator in the form $2^m\times 5^n,$ when $m, n$ are non-negative integers.

Write down the decimal expansion of the rational numbers $\frac{7}{80}$ by writing their denominator in the form $2^m\times 5^n,$ when $m, n$ are non-negative integers.

Write down the decimal expansion of the rational number $\frac{14588}{625}$. [By converting the denominator in the form $2^m\times 5^n,$ when $m, n$ are non-negative integers]

Which rational number is represented by

$3.351515151\dots$

What can you say about the prime factorisation of denominator of rational number $43.4305?$

What can you say about the prime factorisation of denominator of rational number $43.123456789?$

What can you say about the prime factorisation of denominator of rational number $43.\overline{123456789}$?

What can you say about the prime factorisation of denominator of rational number $27.\overline{142857}$?