Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

What animal walks on four legs in the morning, two legs during the day, and three legs in the evening?

Oedipus, the king of Thebes, figured out the answer to the riddle:

Count the number of triangles in the picture below:

No one wants to have it, but if one got it, he does not want to lose it. What is It?

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

If Bihan is 10, Anirudha is 20, and Kim and Seal are both 5, but Rikold is 10, how much is Kenniger by the same trend?

There is a box full of marbles,
all but two are blue,
all but two are green,
and all but two are red.

How many marbles are in the box?

What word is identified by the below rebus?

Your Your Your Your Your
Your Your Your Your Your

The more of this there is, the less you see. What is it?

In the Mexico City area, there are two Houses H1 and H2. Both H1 and H2 have two children each.
In House H1, The boy plays for Mexico Youth academy and the other child plays baseball.
In House H2, The boy Plays soccer for his school in Mexico and they recently have a newborn.

Can you prove that the probability of House-H1 having a girl child is more than that of House-H2?