Opened by Ronnie at 2007-12-15 12:19
Problem 44
"Find the pair of pentagonal numbers, Pj and Pk, for which their sum and difference is pentagonal and D = |Pk − Pj| is minimised; what is the value of D?"
Was bedeutet diese Schreibweise : "D = |Pk − Pj|"
bzw. was ist hier mit "minimised" gemeint?
"Find the pair of pentagonal numbers, Pj and Pk, for which their sum and difference is pentagonal and D = |Pk − Pj| is minimised; what is the value of D?"
Was bedeutet diese Schreibweise : "D = |Pk − Pj|"
bzw. was ist hier mit "minimised" gemeint?