Quantitative Aptitude - Arithmetic Ability Questions

The sum of the digits of a 2-digit number is 8. If we add 36 to the number, the new number obtained is a number formed by interchange of the digits. What is the number?

The mean of marks secured by 60 students in division A of class X is 64, 40 students of division B is 60 and that of 60 students of division C is 58. Find the mean of marks of the students of three divisions of Class X.

What is the mean of the first five Triangular Numbers?

A sum of Rs 4000 becomes Rs 5800 in 3 years, when invested in a scheme of simple interest. If the same sum is invested in a scheme of compound interest with same yearly interest rate (compounding of interest is done yearly), then what will be the amount (in Rs) after 2 years?

If P + 1P+2 = 1, then the value of P+23+1P+23-3 ?

If cosθ = x2-y2x2+y2, then the value of cotθ is

For which value of ‘g’ the linear graph of 6x + 12y +9 = 0 and 2x + gy + 3 = 0 has infinite number of solutions?

If 2x - 2(3 + 4x) < -1 - 2x > -5/3 - x/3; then x can take which of the following values?