Quantitative Aptitude - Arithmetic Ability Questions

The sum of two digits of a number is 10. If the digits are interchanged, then its value increases by 18. Find the number.

In which quadrant, will the point (4, -2) be located?

Monika's father was 38 years of age when she was born while her mother was 36 years old when her brother four years younger to her was born. What is the difference between the ages of her parents?

In triangle ABC, ∠ABC = 90°. BP is drawn perpendicular to AC. If ∠BAP = 30°, then what is the value (in degrees) of ∠PBC?

What is the time taken by a 180 m long train running at 54 kmph to cross a man standing on a platform?

Which one does not belong to the group?

In ΔPQR measure of angle Q is 90°. If cosP = 5/13, and PQ = 2.5cm, then what is the length (in cm) of side PR?

If (x + y)/z = 2, then what is the value of [y/(y – z)] + [x/(x – z)]?