Quantitative Aptitude - Arithmetic Ability Questions

Select the odd number from the given alternatives.

One of four words is a class to which the other three belong. Identify the class.

What is the digit in unit's place of the product 51 x 52 x 53 ...... 59?

What least number must be added to 213, so that the sum is completely divisible by 9?

Which of the following quadratic equations has real roots?

The area of a square is equal to its side, if the side is 1 unit.

12 men or 30 boys can complete a work in 72 days. How many days will 48 men and 24 boys will take to complete the same work?

G and AD are respectively the centroid and median of the triangle ΔABC.The ratio AG:AD is