Dreamshire | Solutions 70-79

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Solutions 70-79

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By Mike ⋅ June 10, 2009 ⋅ One comment

By analysing a user’s login attempts, can you determine the secret numeric passcode?

By Mike ⋅ June 8, 2009 ⋅ One comment

Find the number of different lengths of wire can that can form a right angle triangle in only one way.

By Mike ⋅ June 8, 2009 ⋅ Post a comment

What is the first value which can be written as the sum of primes in over five thousand different ways?

By Mike ⋅ April 19, 2009 ⋅ Post a comment

Investigating the number of ways in which coins can be separated into piles.

By Mike ⋅ April 13, 2009 ⋅ 7 comments

Investigate values of n for which φ(n) is a permutation of n.

By Mike ⋅ April 8, 2009 ⋅ One comment

Determine the number of factorial chains that contain exactly sixty non-repeating terms.

By Mike ⋅ March 31, 2009 ⋅ One comment

How many different ways can one hundred be written as a sum of at least two positive integers?