3.
If 'B' stands for '+’, 'E' stands for '-', ‘R’ stands for 'x', ‘H’ stands for '÷' then
19.
If “bat” is termed as “pen”, a “pen” is termed as an “eraser”, an “eraser” is termed as “board”, and a “board” is termed as “pot”. Then a student will use which of the following to write with ___.