Which Number is the odd one out?

A) 7145
B) 2716
C) 5321
D) 4135

Find out which of the given views in the picture is accurately the top view of the given pyramid.

In the figure that has been attached to this question, each digit represents a digit. The similar letters carry the same integer value. Can you expose the original digits?

There is a jar in which there are two types of candies.
20 blueberries and 16 strawberries. You perform the following steps:
1) You take out two candies.
2) If the two candies are of the same flavour, you add a blueberry one otherwise, you add the strawberry one.

You repeat these two steps till there is just one candy remaining in the jar. Which flavoured candy will be left?

Look at the picture and find out which square is not linked with any of the other squares.

A frog is at the bottom of a 30-meter well. Each day he summons enough energy for one 3-meter leap up the well. Exhausted, he then hangs there for the rest of the day. At night, while he is asleep, he slips 2 meters backwards. How many days does it take him to escape from the well?

My location can be determined by the below rebus.
So where am i ?

Count the Triangle in the figure given below:

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

A man hijacks an aeroplane transporting both passengers(8 of them) and valuable cargo. After taking the cargo, the man demands nine parachutes, puts one of them on, and jumps, leaving the other eight behind. Why did he want eight?