A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

There are 100 bulbs in a room. 100 strangers have been accumulated in the adjacent room. The first one goes and lights up every bulb. The second one goes and switches off all the even-numbered bulbs - second, fourth, sixth... and so on. The third one goes and reverses the current position of every third bulb (third, sixth, ninth? and so on.) i.e. if the bulb is lit, he switches it off and if the bulb is off, he switches it on. All the 100 strangers progress similarly.

After the last person has done what he wanted, which bulbs will be lit and which ones will be switched off?

A plane crashed between the border of Mexico and America. Where do you bury the survivors?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

I noticed one of the words in the oxford dictionary is spelled incorrectly. What about you?

Three people check into a hotel. They pay $60 for the rent of the room. After they check-in, the manager realize that the rent for the room is $55. So, he gives $5 to the bellboy and asks him to give it to them. The bellboy thinks that it will be difficult for the three people to share $5 among them and seeking the personal benefit, he pockets $2 and gives the remaining $3 to them.

Now, each person paid $20 and got back $1. In this manner, each of them paid just $19 which totals to the amount of $57. The bellboy has $2 with him and adding them, we get $59. So where is the remaining $1?

Solve the following series:
AZ, GT, MN, __, YB

Can you find the six hidden animals in the picture below?

Replace the question mark in the picture below.

What's the best place to go shopping in the ocean?