Assume a discount rate of $6\%.$ You are offered a deal that will pay you $$100/$mo for $1$ year. The counterparty, though, is not perfectly reliable. They have a $10\%$ probability of ripping you off and not making the payments.

What's the most would you pay for the deal? $($If it matters to you, assume you can make as many deals as you want, and the rip$-$off probability between deals is not correlated.$)$

Also pretty easy, but a slight twist.

Assume a discount rate of $6\%.$ You are offered a deal that will pay you $$100/$mo for $1$ year. The counterparty, though, is not perfectly reliable. They have a $10\%$ probability of ripping you off and not making the payments.

What's the most would you pay for the deal? $($If it matters to you, assume you can make as many deals as you want, and the rip$-$off probability between deals is not correlated.$)$