Quantitative Aptitude - Arithmetic Ability Questions

The average of 8 consecutive integers is 23/2. What is the average of first three integers?

There are 10 dozen apples, 15 dozen mangoes and 20 dozen oranges for selling. If 1/2, 1/3 and 1/4 of them are sold respectively. How many of the total fruits are remaining?

What is the value of {[sin (x + y) – 2 sin x + sin (x – y)]/[cos (x – y) + cos (x + y) – 2 cos x]} × [(sin 10x – sin 8x)/(cos 10x + cos 8x)]?

If cos 60° - sec 30° = x, then the value of x is

In a cyclic quadrilateral ABCD , the side AB is extended to a point X. If ∠XBC = 82° and ∠ADB = 47° , then the value of ∠BDC is

Present ages of Sai and Satheesh are in the ratio of 5:4 respectively. Three years hence, the ratio of their ages will become 11:9 respectively. What is Satheesh's present age in years?

40.36 ­- (9.347 -­ x ) -­ 29.02 = 3.68. Find x.

In the following question, select the odd letter/letters from the given alternatives.