Forehead Number Game Quiz

Forehead Number Game Quiz

Assessment

Interactive Video

Mathematics, Fun

7th - 12th Grade

Hard

Created by

Aiden Montgomery

FREE Resource

The video introduces the Forehead Number Game, a logic puzzle involving three perfect logicians. Each player has a unique number on their forehead, and one number is the sum of the other two. Players must deduce their own number by observing others. The video explains the rules, setup, and logical deduction process, leading to the solution where the player determines their number is 50. The solution is reached by eliminating possibilities based on the inability of others to deduce their numbers.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main objective of the Forehead Number Game?

To find the sum of all numbers

To identify the person with the highest number

To deduce the number on their own forehead

To guess the color of the paint on their forehead

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is unique about the numbers painted on the players' foreheads?

They are all the same

They are all prime numbers

They are all unique and one is the sum of the other two

They are all even numbers

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does each player see during the game?

Only their own number

The numbers on the other two players' foreheads

All three numbers

Their own number and one other player's number

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why can't a player immediately determine their number after the first round of questioning?

They are not allowed to speak

They need more information from the other players

They forgot the rules

They can see all numbers

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are the two possible numbers on your forehead if you see 20 and 30 on the other players?

15 or 45

40 or 60

20 or 30

10 or 50

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What logical deduction can be made if a player sees a 10 on another player's forehead?

They must be 10

They must be 20

They must be 30

They must be 50

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is it impossible for two players to have the same number on their foreheads?

The numbers are all prime

The numbers are all even

The numbers must be unique

The numbers are all odd

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