Question

Make up as many expressions with numbers (no variables) as you can from three numbers $6$, $8$ and $9$. Every number should be used not more than once. Use only addition, subtraction and multiplication.

Answer 1

Some of the expressions formed by $6$, $8$ and $9$ are as follows:

(a) $6\times (9-8)$

(b) $6\times (9+8)$

(c) $(9+8)\times 6$

(d) $(9-8)\times 6$

(e)$(8+9)\times 6$ [ This expression will give same result as the expression (c) but addition is commutative in nature ]

(f) $(9-6)\times 8$

Therefore, $6\times (9-8)$, $6\times (9+8)$, $(9+8)\times 6$, $(9-8)\times 6$, $(8+9)\times 6$, and $(9-6)\times 8$ are the some of the expressions formed by $6$,$8$,$9$

respectively.