Can you find the odd number in the following?

2716, 4135, 5321 and 7145

what's the probability of getting a king or a queen from a pack of 52 cards?

If you read clockwise, you can form a word by inserting three missing letters in the picture given below. Can you do it?

What can run but never walk, have a mouth that never speaks, have a head that never weeps, and have a bed but never sleeps?

A large container is kept in open under the rain. Every passing hour, the water collected inside the container becomes double what it was.

In ten hours, the container is filled completely. Can you calculate how long would it have taken to be filled in half?

A time long back, there lived a king who ruled the great kingdom of Trojan House. As a part of the renovation of the kingdom to meet future security needs, he asked his chief architect to lay down a new play in a manner that all of his 10 castles are connected through five straight walls and each wall must connect four castles together. He also asked the architect that at least one of his castles should be protected with walls. The architect could not come up with any solution that served all of King's choices, but he suggested the best plan that you can see in the picture below. Can you find a better solution to serve the king's demand?

How do you go from 98 to 720 using just one letter?

Identify the 10 differences between the two given pictures.

What do you call a fish without an eye?

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?