Quantitative Aptitude - Arithmetic Ability Questions

The least number that must be substracted from 63520 to make the result a perfect square is

There are two numbers such that the first number is half of the second number. If their average is 57, then what is the first number?

A train starts moving from a place X at 7:00 a.m. and arrives at another place Y at 1:00 p.m. on the same day. If the speed of the train is 15 m/s, then what will be the distance (in km) covered by the train?

What is the value of sec 30° + cot 30°?

What is the value of tan 7π/4?

ΔDEF is right angled at E. If m∠D = 45°, then find the value of (tanF + 1/3).

Find the value of 491321973

In the following question, select the odd letter/letters from the given alternatives.