Quantitative Aptitude - Arithmetic Ability Questions

Which of the following numbers is not a prime number?

If a+1a2 = 3, then the value of a18+ a12+a6 + 1 is

5% more is gained by selling a watch for Rs. 350 than by selling it for Rs. 340. The cost price of the watch is

A point P lying inside a triangle is equidistant from the vertices of the triangle. Then the triangle has P as its

A cone of radius 7 cm and height 12 cm is completely filled with water. This water is emptied into an empty cylindrical vessel of radius 3.5 cm. What will be the height of water in this vessel?

What are the co­-ordinates of the mid point of the segment joining points C(0,­-3) and D(8,5)?

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?

In a bag, the ratio of red balls to green balls is 4:9. If 7 more red balls are added to the bag, the ratio of red balls to green balls will become 5:6. How many green balls are there in the bag?