Quantitative Aptitude - Arithmetic Ability Questions

If the three numbers in the ratio 3:2:5 be such that the sum of the squares is equal to 1862 then which number is the middle one.

The cash difference between the selling price of an article at a profit of 2% and 18% is Rs. 3. The ratio of two selling prices is

If cosπ/4c - tanπ/4c = x, then x is

Find x, if 5x-6+5x+6 = 6

What is the simplified value of (cos4 A – sin4 A)?

If 2x-12x = 5, then what is the value x2 + 116x2 - 2

A and B can together do a piece of work in 6 days and A alone can do it in 9 days. The number of days B will take to do it alone is

If x+1x = 2, then x2+1x2 = ?