Quantitative Aptitude - Arithmetic Ability Questions

If two marbles are picked at random, what is the probability that either both are red or both are green?

How many three digit numbers are there in which all the digits are odd?

There is 40% increase in an amount in 8 years at simple interest. What will be the compound interest of Rs. 10000 after 3 years at the same rate?

The slopes of two lines are 1/√3 and √3. What is the angle between these two lines?

What is the x-intercept of line joining (4, 2) and (6, 3)?

If x – 3 + [1/(x – 3)] = 4, what is the value of [(x – 3)3+ [1/(x – 3)3]?

Ramu can row 9 kmph in still water. It takes him twice as long to row up as to row down. Find the rate of stream.

In the following question, select the odd word pair from the given alternatives.