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May
5
comment Why does Paypal send TWO verification payments not just ONE?
... so the real total is 9801-98-97-...-1 = 9801 - (1+98)*98/2 = 9801-4851 = 4950
May
5
comment Why does Paypal send TWO verification payments not just ONE?
Lets say the deposits can be 1 or 2. What I think Merlin is saying is that the deposits can be 1&1 1&2 2&1 2&2, but when you enter them at paypal, the order is irrelevant, so in the event of receiving two different payments PayPal would accept 2&1 and 1&2 as both being correct, so despite being 4 combinations, there's 3 unique answers (because 2 overlap). Extrapolate to deposits between 1 and 99, we get 1&2 and 2&1 overlapping, 1&3 and 3&1, 2&3 and 3&2, 1&4 and 4&1, 2&4 and 4&2, 3&4 and 4&3. So while there's 9801 combinations, Paypal is forgiving on 98+97+..+1 of them...
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May
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answered Why does Paypal send TWO verification payments not just ONE?