Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

A large container is kept in open under the rain. Every passing hour, the water collected inside the container becomes double what it was.

In ten hours, the container is filled completely. Can you calculate how long would it have taken to be filled in half?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

An inspection by the superintendent of St. Joseph School was scheduled on the next day. The class teacher Jenifer knew that he would be asking questions from her class and she would have to choose a pupil to answer. To offer a perfect impression over him, the teacher explained certain instructions to the students to maximise the chances of getting correct answer every time.

What did she say to the students?

When it's bad luck to meet a black cat?

In a secret society, a buried chamber can be accessed only via a secret password. The password is seven characters long and comprises of just letters and numbers.

You find a code that can help you in cracking the password. The code says "You force heaven to be empty".

Can you deduce the password from that?

Which digit occurred maximum times between the number 1 and 1000?

What is black when you buy it, red when you use it, and gray when you throw it away?

When is the top of a mountain similar to a savings account?

I can write cow in 13 letters.

Can You?