Quantitative Aptitude - Arithmetic Ability Questions

Which of the following equations has real and distinct roots?

The HCF of 24, 60 and 90 is:

In the following question, select the odd word pair from the given alternatives.

Select the odd word/letters/number/number pair from the given alternatives.

If secA/√(sec2A ­- 1) = x, then value of x is

What is that least digit that must be added to the product 5786 × 5784 to make it a perfect square?

Pipes A and B, when working together, can fill an empty tank in 8 hours. If B is stopped after 2 hours, it will take a total of 11 hrs to fill the tank. How long would it take A to fill the empty tank alone?

If a perfect square, not divisible by 6, be divided by 6, the remainder will be