About Tier 4 - Tensor
A layered challenge requiring substantial reasoning or technical control.
Difficulty describes the challenge, not the solver. It is a Society guide rather than a formal academic level.
The tier is a Society guide to the amount of reasoning, technical work and insight a problem is expected to require. Your experience may vary depending on the topic and your background.
One Six Changes the Odds
Probability / Conditional Probability - 5-8 min
Roll two independent, fair six-sided dice, each numbered to . Keep only rolls for which at least one die shows . Among those rolls, what is the probability that the total is ?
Assumptions
The dice are distinguished by colour. The information comes from checking the stated event, not from selecting and reporting one particular die.
More Options for One Six Changes the Odds
Collection question · Revision 1 · ID: dice-condition