Quantitative Aptitude - Arithmetic Ability Questions

If the number x3451 is divisible by 3, where x is a digit, what can be the sum of all such values of x?

How many prime numbers are there between the positive integers 60 and 100?

Average age of 5 students of a school is 14 years. The average age of students and their Mathematics and science teachers is 30 years. If the age of science teacher is 6 years more than the age of Mathematics teacher, then what is the age (in years) of Mathematics teacher?

ABCD is a cyclic quadrilateral of which AB is the diameter. Diagonals AC and BD intersect at E. If ∠DBC = 35°, Then ∠AED measures

The total surface area of a cube is 181.5 cm². Find its side (in cm).

The area of the triangle whose vertices are given by (2,4), (-3,-1) and (5,3) is

A 25m long ladder is rested on a wall. The foot of the ladder is 7m away from the wall. If the end of the ladder (resting on the wall) slides down 4m, then how far will its foot move away?

The total surface area of a cube is 73.5 sq.cm. Find its side (in cm).