Quantitative Aptitude - Arithmetic Ability Questions

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

Out of two numbers, 65% of the smaller number is equal to 45% of the larger number. If the sum of the numbers is 2574, then what is the value of larger number?.

If sinC + sinD =X, then the value of X is?

Marked price of an item is Rs 900. On purchase of 2 items discount is 16%, on purchase of 5 items discount is 44%. Raksha buys 7 items, what is the effective discount?

If 2x+ 4(x - 3) < -2 - x < 2x - 1, then find the value of x.

The sum of 2xy(3x + 4y - 5z) and 5yz(2x - 3y) is

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?

Simplify (b2x 3a2z4 ) × (b2x 4a4z3 )/(a3b2z4 )