Identify the hidden meaning behind this picture?

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?

Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?

What do you answer even though it never asks you questions?

It's a test that will check your IQ.

Suppose you have one 11 minute hourglass and one 13 minute hourglass.

Can you measure exactly fifteen minutes using them ?

Identify the 10 differences between the two given pictures.

I have thought of a number that is made up by using all the ten digits just once. Here are a few clues for you to guess my number:

First digits is divisible by 1.
First two digits are divisible by 2.
First three digits are divisible by 3.
First four digits are divisible by 4.
First five digits are divisible by 5.
First six digits are divisible by 6.
First seven digits are divisible by 7.
First eight digits are divisible by 8.
First nine digits are divisible by 9.
The number is divisible by 10.

Can you find out the number ?

John was writing his first book. After saving the document, he locked his laptop with a password and mentioned some phrases for the hint box.

A friend of his tried opening his laptop but found out that it was password protected. Following is the hint that appeared.
1 mobile 3 books 2 roars 1 night 4 balls 2 lighters 1 ghost 1 hat 3 watches.

Can you help him in cracking the password?

In a certain country ½ of 5 = 3. If the same proportion holds, what is the value of 1/3 of 10?

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