Quantitative Aptitude - Arithmetic Ability Questions

If sin ­-240° = x, then the value of x is

If n + n2 + n4 + n8 = 45, then find the value of 'n' which will satisfy the equation.

Three cubes of iron whose edges are 6cm, 8cm and 10cm respectively are melted and formed into a single cube. The edge of the new cube formed is

At least two pairs of consecutive angles are congruent in a _____.

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

N invented Rs.20,000 in a business. Six months later, C joined him with Rs. 10,000. At the end of the year, the profit was Rs. 10,000. What should be the share of N?

If Tan A = 15/8 and Tan B = 7/24, then Tan (A - B) = ?

The perimeter and the breadth of a rectangle are 82 cm and 20 cm respectively. Calculate the length of its diagonal (in cm).