I 'm a business infromatics student . I 'm planning to pursue a master 's degree in -LRB- engineering and electronics -RRB- . Am I academically eligible ?
If pqrst = 243 where p , q , s , r , t are integers , then the difference between maximum and minimum values of -LRB- 1 + p -RRB- -LRB- 1 + q -RRB- -LRB- 1 + r -RRB- -LRB- 1 + s -RRB- -LRB- 1 + t -RRB- ?