The HCF of \(\frac{9}{10}, \frac{12}{25}, \frac{18}{35}, \frac{21}{40}\) is

The digit in the unit's place of the number represented by \(7^{95} - 3^{58}\) is

The value of \((25.732)^2 - (15.732)^2\) is

A train starts full of passengers. At the first station, it drops one third of passengers and takes 280 more. At the second station, it drops one half of the new total and takes 12 more. On arriving at the third station, it is found to have 248 passengers. The number of passenger…

The value of \(\left(\frac{1}{\sqrt{9}-\sqrt{8}} - \frac{1}{\sqrt{8}-\sqrt{7}} + \frac{1}{\sqrt{7}-\sqrt{6}} - \frac{1}{\sqrt{6}-\sqrt{5}} + \frac{1}{\sqrt{5}-\sqrt{4}}\right)\) is

In a cricket team of 11 players, the average age is 28 years. Out of these, the average ages of three groups of three players each are 25 years, 28 years and 30 years respectively. If in these groups, the captain and the youngest player are not included and the captain is eleven…

A number consists of two digits whose sum is 8. If 18 is added to the number, its digits are interchanged. The number is

\(\frac{4}{7}\) of a pole is in the mud. When \(\frac{1}{3}\) of it is pulled out, 250 cm of the pole is still in the mud. The full length of the pole is

If \(2^x = 3^y = 6^{-z}\), then \(\left(\frac{1}{x} + \frac{1}{y} + \frac{1}{z}\right)\) is equal to