Quantitative Aptitude - Arithmetic Ability Questions

What is the value of ( 1/2 - cot45) ?

Of the 3 numbers whose average is 40, the first is 1/3 rd the sum of other 2. What is the first number?

What is that least digit that must be added to the product 5786 × 5784 to make it a perfect square?

If tan(A/2) = x, then the value of x is

30% discount is offered on an item. By applying a promo code the customer wins 20% cash back. What is the effective discount?

If 2cosAsinB = x, then the value of x is?

Select the odd word/letters/number/number pair from the given alternatives.

Find the odd word/letters/number pair pair from the given alternatives.