Quantitative Aptitude - Arithmetic Ability Questions

Expanded and simplification of (x + 3)(x - 1) will be equal to

12 men and 16 women together can complete a work in 4 days. It takes 80 days for one man alone to complete the same work, then how many days would be required for one woman alone to complete the same work?

At least one diagonal bisects the other in a _____.

The average revenues of 9 consecutive years of a company is Rs 65 lakhs. If the average of first 5 years is Rs 60 lakhs and that of last 5 years is Rs 72 lakhs, find the revenue for the 5th year.

A can paint a house in 42 days and B can do it in 21 days. Along with C, they can finish the job in 7 days only.C alone can do the painting job in how many days, ?

Which of the following is the largest number among 2, 33, 4, 53

What number should be added to each of 4, 16, 18 and 58 so that the resulting numbers will be in proportion in the given order?

If a-1a=1, then a2 + 1a2 ?