BdMO National Junior 2015#1

Discussion on Bangladesh Mathematical Olympiad (BdMO) National
samiul_samin
Posts: 1007
Joined: Sat Dec 09, 2017 1:32 pm

BdMO National Junior 2015#1

Unread post by samiul_samin » Tue Feb 19, 2019 10:41 am

A small country has a very simple language. People there have only two letters and all their words have exactly seven letters. Calculate the number maximum of words people use in that country?

samiul_samin
Posts: 1007
Joined: Sat Dec 09, 2017 1:32 pm

Re: BdMO National Junior 2015#1

Unread post by samiul_samin » Tue Feb 19, 2019 11:12 am

Hint
Use $n^r$ formula
Answer
$\fbox {128}$

Post Reply