Quantitative Aptitude - Arithmetic Ability Questions

If a + b = ­ 8 and a2 + b2 = 34, then value of ab is

LCM of two co-prime numbers a and b is (a is greater than b):

A, B and C can do a job working alone in 50, 75 and 20 days respectively. They all work together for 4 days, then C quits. How many days will A and B take to finish the rest of the job?

An investor invested his saving in the stock market. The value of his investments increased by 12% and 9% in the first year and the second year respectively. If the value of his investments after two years became Rs 97,664 then how much had he invested (in Rs)?

If 310 × 272 = 92 × 3n then the value of n is

M is the largest 4 digit number, which when divided by 4, 5, 6 and 7 leaves remainder as 2, 3, 4, and 5 respectively. What will be the remainder when M is divided by 9?

If x3 = 62 - 32, then the value of x is

1/(secA + tanA) is equal to