Which word does the below Plexor means ?

What is the coolest letter in the alphabet?

John was born on March 5, 1970, in Delhi, India. Jacob was born 25 days before John. The year when they took birth, Republic Day fell on Monday.

Can you find out on what day was Jacob born?

The centre of the third figure is empty. What digit should fit inside?

Do you know who was buried in John's tomb?

Find the next number in the series.
1 10 24 43 67 ?

Can you find out what is missing?

1 3 5
2 4 ?

Hint: It's not six. Think out of the box.

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?

A maths symbol is hidden in the below Bar Graph. Can you decipher it?

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