? 4 ⍴ 6                   ⍝ Roll four six-sided dice

1 4 1 1

    ? x ⍴ 6                   ⍝ Roll x six-sided dice

1 6 5 ... 3 2 2

    ? 3 2 1 0                 ⍝ The result for 1 is always 1

2 2 1 0.9637543707

      {⍵[?8⍴≢⍵]} 'Hello'        ⍝ Choose 8 random letters

eeHHHolo