Can you find the odd number in the following?

2716, 4135, 5321 and 7145

How can one talk without saying a single word?

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

What numbers should go on the bottom line?
3 6 9 15
8 2 10 12
11 8 19 27
19 10 29 39
? ? ? ?

You have two jars of chocolates labelled as P and Q. If you move one chocolate from P to Q, the number of chocolates on B will become twice the number of chocolates in A. If you move one chocolate from Q to P, the number of chocolates in both the jars will become equal.

Can you find out how many chocolates are there in P and Q respectively?

You have to fill the below given grid in a manner that every row and column contains the digits 1 to 6. Also, make sure that the squares that are connected with each other must contains the same digit.

In the addition below, all digits have been replaced by letters.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?

I am quite hot but become too cold if you remove the first two letters. What am I?

What can go through glass without breaking it?

How high do you have to count before you use the letter “a” in the English spelling of the whole number?