Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.

Can you solve this picture maths equation?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

The current time can be represented by below textual rebus.

0
=========
B.Sc
LLB

Can you tell us the current time?

10 people came into a hotel with 9 rooms and each guest wanted his own room. The bellboy solved this problem.
He asked the tenth guest to wait for a little with the first guest in room number 1. So in the first room, there were two people. The bellboy took the third guest to room number 2, the fourth to number 3, ..., and the ninth guest to room number 8. Then he returned to room number 1 and took the tenth guest to room number 9, still vacant.
How can everybody have his own room?

Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?

Solve the equation in the image by looking at the pattern closely.

A Shopkeeper sold a few chickens to four different customers on a particular day. It was such that each customer purchased half of the remaining chickens and half the chicken more.

Can you find out how many chicken were sold by the shopkeeper on that day if we tell you that the fourth customer bought a single chicken ?

What does an Island and the letter T have in common?

The day after tomorrow will be three days before Tuesday. Can you find out what is today?