Quantitative Aptitude - Arithmetic Ability Questions

If (9 - 3x) - (17x - 10) = -1, then the value of x is

4 + 16 x -12 x 24 - 13 - 3 ÷ 20 - 4 = ?

P does half as much work as Q in 1/3 of the time. If together they take 15 days to complete a work, how many days will P take to do it alone?

The perimeter of two similar triangles ABC and PQR are 36 cms and 24 cms respectively. If PQ = 10 cm then the length of AB is

Which of the following is NOT prime number?

If an equilateral triangle has side 12 cm, then what is the difference (in cm) between the circumradius and inradius?

ABC is a right angled triangle with angle A = 90 deg. Then the value of cos2A+cos2B+cos2C is

If 1/√(1 + cot2A) = x, then value of x is