What is full of holes but still holds water?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

How many Watermelons are there in the below picture?

How can you take 2 from 5 and leave 4?

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?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

The first two letters signify a male, the first three letters signify a female, the first four letters signify a great, while the entire world signifies a great woman. What is the word?

I am a type of food that is often found in the fridge and can be white in colour. What I am?
Hint 1: I am a dairy product.
Hint 2: You can spread me on the bread.

A boy was locked in a room by some robbers. All that is in the room is a piano, a calendar, and a bed. The room is locked from the outside. What does he eat, drink, and how does he escape and get out?

Replace the question mark with the correct number in the below-given picture?