Greg Attwood, Jack Barraclough, Ian Bettison, Alistair Macpherson, Bronwen Moran, Su Nicholson, Diane Oliver, Joe Petran, Keith Bledger, Harry Smith, Geoff Staley, Robert Ward-Penny dhe Dave Wilkins
Pyetja
A={x:3x+5>2}, B={x:2x+1≤3}, C={x:11<2x−1}
Jepet që A∩(B∪C)={x:p<x≤q}∪{x:x>r}, gjej vlerat e p, q dhe r.