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Pair Sums

Five numbers added together in pairs produce: 0, 2, 4, 4, 6, 8, 9, 11, 13, 15 What are the five numbers?

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Weekly Problem 16 - 2012

Weekly Problem 16 - 2012

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Weekly Problem 47 - 2013

Weekly Problem 47 - 2013

Strange Bank Account (part 2)

Stage: 3 Challenge Level: Challenge Level:1
Here is a table showing some ways of obtaining a £5 increase:

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?