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Negative Dice
If the odd numbers on two dice are made negative, which of the totals cannot be achieved?
Age 11 to 14
Challenge Level
Here is a table showing some ways of obtaining a £5 increase:
Can you continue the table in each direction?
| Deposits $(+ £2)$ | Withdrawals $(- £3)$ | Calculation | Outcome |
| ... | ... | ... | ... |
| $4$ | $1$ | $4 \times (+ £2) + 1 \times (- £3)$ | $+ £5$ |
| $7$ | $3$ | $7 \times (+ £2) + 3 \times (- £3)$ | $+ £5$ |
| $10$ | $5$ | $10 \times (+ £2) + 5 \times (- £3)$ | $+ £5$ |
| ... | ... | ... | ... |
Can you continue the table in each direction?
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NRICH is part of the family of activities in the Millennium Mathematics Project.
NRICH is part of the family of activities in the Millennium Mathematics Project.