Suffice (Mind Loft)

About Suffice (Mind Loft)

Suffice is a reasoning puzzle on Mind Loft, a free site of daily browser games, built on the data sufficiency format known from admissions tests such as the GMAT. Each day brings eight items, the same for every player.

Every item has a question and two statements. You are not asked for the answer. You are asked whether the statements give enough information to settle it: and you choose one of five answers: the first statement alone is enough, the second alone is enough, both together are needed, each alone is enough, or even both together are not enough. On the day we looked, the first item asked for the average of a list of five integers from 1 to 9, given its median and that no number repeats. The skill is knowing when you have enough, and stopping there. Calculating the value itself only costs time.

The header keeps your score and a clock, and the day's results go on the leaderboard. A new set goes up at midnight US Eastern Time, and Sundays bring the Sunday Edition, the biggest or hardest of the week.

It sits among Mind Loft's logic dailies with Paths, Plot and Docket, and suits players who like the reasoning behind a maths problem more than the arithmetic.

How to play Suffice (Mind Loft)

1. Open mindloftdaily.com/suffice and press Start to see the first item.
2. Read the question and its two statements.
3. Decide whether the statements are enough to settle the question, alone or together.
4. Pick your answer and move on; do not work out the actual value.
5. Go through all eight items; your score and time go on the daily leaderboard.

Tips

• Test each statement on its own before combining them.
• Look for one counterexample: if two different answers fit, the information is not enough.
• Do not finish the calculation once you know it could be finished.
• Watch for hidden assumptions such as whole numbers or positive values; the question decides what is allowed.

Questions