Solution:

nineteen

Explanation:
worstcase (7purple+11yellow+1blue)

Solution:

This is quite a famous interview puzzle and is usually asked as a warm up question. While you can figure out endless possibilities, the answer is quite simple. Detective Hoffman will just have to wait till the night. When there is no sun, he can simply walk out of the door that leads to the chamber built with magnifying glass.

Solution:

Did you consider the fact that we could be talking months here?
January - 31 days
February - 28 days
March - 31 days
April - 30 days
May - 31 days

Thus the next number in the sequence will be 31.

Solution:

To solve this question, we will use a simple formula i.e. person*time/work

According to the question
(Person1*Time1)/Work = (Person2*Time2)/Work
Let us put in the values now
(100*60)/Work = (500*Time)/Work
Time = 12

Thus the same amount of food will last 12 days for 500 people.

Solution:

Only John was going to visit the church. He just met everybody else on way.

Solution:

Four
Three girls and One Boy

Solution:

Payal

Solution:

21

Explanation:
There are 10 ahead of him and there are 10 behind him + tony stark himslef

Solution:

A1. Architect
A2. 3

Solution:

A1. Two
A2. Eleven