Quantitative Aptitude - Arithmetic Ability Questions

What is the average of first 19 odd numbers?

The sum of the cubes of two numbers in the ratio 3 : 4 is 5824. The sum of the numbers is:

In the given fig, ST||RP, then what is the value of supplementary angle y (in deg)?

The average height of A, B and C is 148 cm. If the average height of A and B is 136 cm and that of B and C is 125 cm, then what is the height (in cm) of B?

A can do a work in 15 days and B in 20 days. If they work on it together for 6 days, then what fraction of work is left?

P and Q undertook to do a work for Rs 7200. P alone could do it in 20 days and Q alone in 12 days. With the assistance of R they finished the work in 5days. What is the share (in Rs) of R?

The simple interest on a certain sum of money invested at a certain rate for 2 years amounts to Rs. 1200. The compound interest on the same sum of money invested at the same rate of interest for 2 years amounts to Rs. 1290. What was the principal?

Find the odd word/letters/number from the given alternatives.