Quantitative Aptitude - Arithmetic Ability Questions

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

In the following question, select the odd number from the given alternatives.

The difference between compound interest and simple interest on a sum for 2 year at 20% per annum is Rs 200. If the interest is compounded half yearly, then what is the difference (in Rs) between compound and simple interest for 1st year?

Mummy can bake 75 cakes in 15 hours, Mummy and Sister together can bake 120 cakes in 20 hours. How many cakes Sister can bake in 30 hours?

O is the orthocentre of∆ABC, and if ∠BOC = 110° then ∠BAC will be

The ratio of present ages of Ratna and Shantanu is 5:4. After 19 years the ratio of their ages will be 10:9. What is Ratna's present age?

If a = √2 + 1 and b = √2 - 1, then the value of 1a+1+1b+1 will be

What is the equation of the line passing through the point (-1,3) and having x-intercept of 4 units?