Quantitative Aptitude - Arithmetic Ability Questions

What will be the average of the first 5 positive even numbers divisible by 9?

In a college union, there are 48 students. The ratio of the number of boys to the number of girls is 5:3. The number of girls to be added in the union, so that the number of boys to girls in 6:5 is

The area of a square is 40.5 cm². Find the length of its diagonal (in cm).

What is the value of tan 6° tan 36° tan 84° tan 54° tan 45°?

If 2x2+2y2=4a the find the value of 2ax2-a+2ay2-a

If a + a2 + a3 – 1 = 0, then what is the value ofa3 + (1/a)?

A sum of Rs 8000 is divided into two parts. The simple interest on first part at the rate of 21% per annum is equal to the simple interest on second part at the rate of 35% per annum. What is the interest (in Rs) of each part?

A sum fetched a total simple interest of Rs 5320 at the rate of 7% per year in 5 years. What is the sum?