I am an odd number. Take away a letter and I become even. What number am I?

Before reading ahead, you must know the fact that only one of the people here is telling the truth.

A says that B is lying.
B says that C is lying.
C says both A and B are lying.

Can you find out who is speaking the truth?

By using all numbers, i.e. 123456789 and subtraction/addition, operators number 100 can be formed in many ways.
Example: 98 + 7 + 6 - 5 - 4 - 3 + 2 - 1 = 100

But if we add a condition use of the number 32 is a must. Then there are limited solutions.
One of such solution is: 9 - 8 + 76 + 54 - 32 + 1 = 100

Can you tell me any other solution?

Can you complete the sequence?

192, 021, 222, 324, 252, 627, 2__, 9__?

What jumps when it walks and sits when it stands?

Pronounced as 1 letter, And written with 3, 2 letters there are, and 2 only in me. I’m double, I’m single, I’m black blue and grey, I’m read from both ends, and the same either way. What am I?

The Little ant seems to be always confused. Do you know why?

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

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

What is the next number in the series?

15 29 56 108 208 ?