#### A Math Forum Project

Math Forum || Problems of the Week || Student Center

This Web page is intended to record solutions submitted by students in grades three through twelve. Submissions will be posted starting February 1, 2001.

Rules: use the digits in the year 2001 and the operations of +, -, x, ÷, sqrt (square root), ^ (raise to a power), and ! (factorial), along with grouping symbols, to write expressions for the counting numbers 1 through 100. Please read and follow the rules carefully.

Teachers may print out worksheets for students to record their findings, or print sheets of manipulatives for students to use.

## STUDENT SOLUTIONS 71 to 80

 Solution Name Grade School 71 sqrt(((1+2)!+0!)!+0!) Tom Lee 9 Queensway Christian College sqrt(((2+0!)!+0!)!+1) Linda Mummy 8 Issaquah Middle School 72 .1*((2+0!)!)! Nicholas Burbaum 5 Cranbury School (((2 + 0!)!)!) / 10 Ritwik Chaudhuri 9 Patha Bhavana ((2+0!)!)! * 0.1 Soti Gergely 11 Gymansium Svetozar Markovic ((2+0!)!)!x.1+0! Brian Casey 6 Parker Middle School {[(2+0!)!]!x.1}+0! Rachelle Tyson 7 Birmingham Covington School (BCS) 73 [(2+0!)!]!*.1+0! Andrew Tsoi 9 Queensway Christian College 74 75 76 77 78 79 80 ((2 * (1! + 0!))!!)!!! + 0 Rory Kulz 10 Clark High School

Please notify Judy Ann Brown of any errors.