Consider the following expressions : 1. x + x² – 1/x 2 . √(ax² + bx + c – d/x + e/x²) 3. 3x² – 5x + ab 4. 2/(ax + b³) 5. 1/x – 2/(x + 5) Which of the above are rational expressions ?

For election to the Lok Sabha, a nomination paper can be filed by

Miscellaneous · Easy

In a month if the seventh day is three days earlier than Saturday,then the nineteenth day of the month will be a

Miscellaneous · Easy

Which among the following events happened earliest ?

Miscellaneous · Easy

An 80-litre solution of alcohol and water has 75% alcohol. How much water (in litres) must be added to bring down the concentration of alcohol to 60%?

Miscellaneous · Easy