Quantitative Aptitude - Arithmetic Ability Questions

The diagonal of a square is equal to the side of an equilateral triangle. If the area of the square is 15√3 sq cm, what is the area of the equilateral triangle?

If a chord of a circle subtends an angle of 30° at the circumference of the circle, then what is the ratio of the radius of the circle and the length of the chord respectively?

In the series 5442673314884743581,the number of 4s that are completely divisible by the number on their right but not divisible by the number on their left is

If cos 2π/3c = x, then the value of x is

Select the odd word/letters/number/number pair from the given alternatives.

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

Of the 3 numbers whose average is 64, the first number is 1/3 times the sum of other 2. The first number is

A number is greater than 58 times its reciprocal by 3/4. What is the number?