Which Number is the odd one out?

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

Spot 5 differences in two Christmas tree below:

In the picture given below, can you find out which digit will take place of the question mark?

I have branches, but no fruit, trunk or leaves. What am I?

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

"That Restaurant always remains crowded. This is the reason why nobody goes there".

Can you find a flaw in this statement?

Replace the question mark with the number below given a simple math problem.

Decode below rebus
D
N
A
T
S , D

Can you divide the below-given shape into four equal and identical pieces?

In the addition below, all digits have been replaced by letters. Equal letters represent equal digits and different letters represent different digits.
ABCABA
BBDCAA
ABEABB
ABDBAA
------- +
AAFGBDH
What does the complete addition look like in digits?