Quantitative Aptitude - Arithmetic Ability Questions

Select the odd letters from the given alternatives.

What is the value of Sin 30- √2 Cos 30

If cos2x + cos4x = 1, then tan2x + tan4x =

If x + 3y - 2z4 = 6, x + 232y + 3z = 33 and 17x + y +z + 2z =9, then what is the value of 46x+ 131y ?

To cover a distance of 144 km in 3.2 hours what should be the average speed of the car in meters/second?

A, B and C can do a job working alone in 6, 9 and 18 days respectively. They all work together for 1 day, then A and B quit. How many days C working alone will take to complete the remainder of the job?

A sum of Rs. 3000 yields an interest of Rs. 1080 at 12% per annum simple interest in how many years ?

What is the difference of the cube and square of the common root of (x2 – 8x + 15) = 0 and (y2 + 2y – 35) = 0?