Quantitative Aptitude - Arithmetic Ability Questions

A can do a piece of work in 10 days, B can do it in 12 days and C can do it in 15 days. In how many days will A, B and C finish it, working all together?

Point P (8 , 5) is the midpoint of segment AB. Co-ordinates of A are (5, y) and B are (x, -3). What is the value of x?

The total surface area of a cuboid is 376 sq cm. Find its volume if its length and breadth are 10 cm and 8 cm respectively?

ΔPQR is right angled at Q. If cotP = 5/12, then what is the value of tanR ?

If x + [1/(x + 7)] = 0, then what is the value of x – [1/(x + 7)]?

A non-zero number is greater than 7 times its reciprocal by 9.3. What is the number?

Find the odd word/letters/number from the given alternatives.

If α and β are the roots of the equation x2+ x – 1 = 0, then what is the equation whose roots are α5 and β5?