Quantitative Aptitude - Arithmetic Ability Questions

For triangle ABC, find equation of median AD if co­-ordinates of points A, B and C are (2,­4), (3,0) and (5,­2) respectively?

If a + b = 8 and ab =15, then a3 + b3 is

Find the unit digit in the given product (4211)102 x (361)52.

Cost of 4 pens, 6 note books and 9 files is Rs 305. Cost of 3 pens, 4 notebooks and 2 files is Rs 145. What is the cost (in Rs) of 5 pens, 8 notebooks and 16 files?

If (tanA ­- tanB)/(1 + tanAtanB) = x, then the value of x is

The value of x for which the expressions 15 ­ 7x and 15x + 7 become equal is _____.

If secA + tanA = x, then find the value of x.

Product of digits of a 2­digit number is 12. If we add 36 to the number, the new number obtained is a number formed by interchange of the digits. What is the number.