**Contents**show

## Which of the following rules should you follow to solve the Tower of Hanoi problem?

Which of the following rules should you follow to solve the Tower of Hanoi problem? **The removed disk must be placed on one of the needles.**

## Is Tower of Hanoi a difficult problem?

The Towers of Hanoi is an ancient puzzle that is a good example of **a challenging or complex task** that prompts students to engage in healthy struggle. … To solve the Towers of Hanoi puzzle, you must move all of the rings from the rod on the left to the rod on the right in the fewest number of moves.

## What is the goal and all the rules of Tower of Hanoi problem?

Tower of Hanoi is a mathematical puzzle where we have three rods and n disks. The objective of the puzzle is **to move the entire stack to another rod, obeying** the following simple rules: Only one disk can be moved at a time.

## Which of the following statements is true for the Tower of Hanoi problem?

The statement **“Only one disk can be moved at a time**” is correct in case of tower of hanoi.

## Is there a rule that will determine the number of disk moves when you know the number of disks in the tower?

For example if you have three disks, the minimum number of moves is 7. If you have four disks, the minimum number of moves is 15.

…

The minimum number of moves for any number of disks.

Number of disks | Minimum number of moves |
---|---|

… | … |

N-1 | M |

N | 2M+1 |

## What is the time complexity of Tower of Hanoi problem?

The time complexity to find order of moves of discs in Tower of Hanoi problem is **O(2^n)**.

## How many moves does it take to solve the Tower of Hanoi?

With 3 disks, the puzzle can be solved in **7 moves**. The minimal number of moves required to solve a Tower of Hanoi puzzle is 2^{n} − 1, where n is the number of disks.

## Is Tower of Hanoi NP complete?

For example, **Towers of Hanoi is not in NP**, because it must print out O(2n) moves for n disks. A non-deterministic machine cannot “guess” and print the correct answer in less time.