Quantitative Aptitude - Arithmetic Ability Questions

If [√(a2 + b2 + ab)] + [√(a2 + b2 – ab)] = 1, then what is the value of (1 – a2 )(1 – b2 )?

Which of the following quadratic equations has real roots?

If 5/6th of 7/6th of a number is 140, then 9/4th of that number is

In a test, Charan secured 54 marks that was also equivalent to obtaining 72% marks. How many marks was the test out of?

If 3x^2 + ax + 4 is perectly divisible by x - 5, then the value of a is :

Select the odd letters from the given alternatives.

What least value which should be added to 1812 to make it divisible by 7, 11 and 14?

The product of two numbers is 48. If one number equals "The number of wings of a bird plus 2 times the number of fingers on your hand divided by the number of wheels of a Tricycle". Then the other number is