Question

Which of the following is not a random experiment? (a) Tossing a coin (b) Rolling a dice (c) Choosing a card from a deck of 52 cards (d) Throwing a stone from a roof of a building

• A. Tossing a coin
• B. Rolling a dice
• C. Choosing a card from a deck of $52$ cards
• D. Throwing a stone from a roof of a building

Answer 1

The correct option is D

Throwing a stone from a roof of a building

Step 1. Explanation for the correct option.

Throwing a stone from a roof of a building:

The outcome is the stone will fall down therefore it is not a random experiment.

Step 2. Explanation for the incorrect options.

Tossing a coin: The outcome maybe head or a tail

Rolling a dice: The outcome may be any number ranging from $1-6$

Choosing a card from a deck of $52$ cards: The outcome may be any card of clubs (♣), diamonds (♦), hearts (♥) and spades (♠),

So, these are random experiment.

Hence, the correct option is $\mathrm{D}$.