What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain

Take one out and scratch my head, I am now black but once was red. What am I?

How many triangles are there on the puzzle below?

I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

You can see it everyday, But cannot touch it at will. What is it?

Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?

John needs to purchase 100 chocolates from three different shops and he has exactly 100 rupees to do that which he must spend entirely. He must buy at least 1 Chocolate from each shop.

The first shop is selling each chocolate at 5 paise, the second is selling at 1 rupee and the third is selling at 5 rupees.

How many chocolates should he buy from each shop?

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

There are three light switches outside a room. One of the switches is connected to a light bulb inside the room.
Each of the three switches can be either 'ON' or 'OFF'.

You are allowed to set each switch the way you want it and then enter the room(note: you can enter the room only once)

Your task is to then determine which switch controls the bulb?