Rummy N | In N Out Burger Wikipedla

Rummy N | In N Out Burger Wikipedla-find the sum of the following series up to n terms: 5 + 55the correct answer is we have 5+55+555+⋯(to n terms)=5(1+11+11+⋯+to n terms)=59(9+99+999+⋯to n terms)=59[(10−1)+(100−1)+(1000−1)+(10n−1)]=59[(...