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People confuse probability and odds

Probability   =   Favorable outcomes / Total Outcomes    =    2   /  7

Odds   =    Favorable outcomes / Unfavorable outcomes

Note, NSS....we have 2 favorable outcomes  to 7 total outcomes

So....we must have  7 - 2  =  5 unfavorable outcomes

So...the odds are

2 / 5   ⇒   D

Doet that make sense ???