S K Gupta and Anubhuti Gangal Solutions for Chapter: Unit Test - 1 (Chapters 1 - 4), Exercise 1: UNIT TEST - 1 (Chapters 1-4)

Evaluate: $\left(\frac{-6}{5}\times \frac{15}{24}\right)÷\left(\frac{7}{9}\times -1\frac{17}{28}\right)$
 

Which of the following numbers becomes a perfect cube when we divide the number by $5$ ?
 

The square root of $\frac{31}{5}$ correct to $2$ places of decimal is
 

${\left(\frac{x^a}{x^b}\right)}^c\times {\left(\frac{x^b}{x^c}\right)}^a\times {\left(\frac{x^c}{x^a}\right)}^b$ equals
 

$\sqrt[3]{2.197}+\sqrt{0.0049}$ equals
 

What is the smallest number that must be added to $1018$to make it a perfect square?
 

Find x if ${\left(\frac{4}{7}\right)}^3÷{\left(\frac{343}{64}\right)}^{2x-1}=\frac{16}{49}$
 

Three numbers are in the ratio $3: 4: 5$. The sum of their cubes is $27000$. Find the numbers.