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Numbers · The Devil's Plan · Season 2

Formula Pyramid

Ten tiles, one target. Three tiles in the right order make the number.

Level 2 of 3 · Medium3 min1-4 playersOnline
Appeared inHidden
Mode
Full rules

How to play Formula Pyramid

Ten tilesEach tile has an operator and a number. A is the top of the pyramid.
Three in orderPick three different tiles. The first tile only gives its number.
Normal maths order× and ÷ before + and −. Every division must come out exact.
ScoreA new answer scores +1. Wrong or repeated costs 1. The count of answers is shown.
Read the full rules

Settings

How to play

  1. The pyramidTen lettered tiles sit in rows of 4, 3, 2 and 1. Each shows an operator and a number.
  2. The targetA target number appears. Find three different tiles that make it, in a set order.
  3. First operator ignoredThe first tile only gives its number. Multiply and divide before you add and subtract.
  4. Buzz and answerBuzz, then name the three letters within 10 seconds. Correct scores +1, wrong or repeated scores -1.

Rules

Formula Pyramid is a buzzer race built on mental arithmetic. Ten tiles form a pyramid, each holding an operator and a number, and you have to find three tiles that make the round’s target.

The board

The pyramid has 10 tiles in rows of 1, 2, 3 and 4, labelled A to J. Each tile shows an operator and a number, such as +3, −7, ×5 or ÷2. The tiles are revealed first, and the target number follows shortly after.

Making the target

  • Choose three different tiles in order. No tile can be used twice in one answer.
  • Ignore the operator on the first tile. It only supplies its number.
  • Work out the result with normal maths order: × and ÷ before + and −.

For example, with A = ×4, B = +3 and C = −2:

  • A, B, C gives 4 + 3 − 2 = 5.
  • B, A, C gives 3 × 4 − 2 = 10.

Same tiles, different order, different answer.

Answering

Press the buzzer, then say the three letters within 10 seconds. A correct answer scores +1. A wrong answer, no answer in time, or an answer someone already gave scores −1. While one player holds the buzzer, nobody else can buzz.

End of a round and the game

A round ends after 3 minutes, or as soon as every valid answer has been found. On the show, the higher score after 10 rounds wins.

Our version

Shared rules

  • A is the top of the pyramid; the rows below are B and C, then D to F, then G to J.
  • Numbers on tiles run from 1 to 9 and no two tiles are the same.
  • Every division must come out exact. If any step of the formula would leave a fraction, the answer is wrong. The show never said either way.
  • Equal-rank operators are worked left to right, so 8 ÷ 2 × 3 is 12.
  • Every target is a whole number from 1 to 99 with between 2 and 10 answers.
  • The number of answers is public. You always see “Found 3 of 7”, so you know when a round can still pay.

Solo (Daily and Practice)

  • One pyramid, 3 minutes. A new answer scores +1; a wrong or repeated one scores −1.
  • Find every answer before the clock runs out to clear the board. Your score is your result either way.
  • The Daily pyramid is the same for everyone each day. Practice can be raced online on the same pyramid.

Vs AI and online rooms (buzzer race)

  • 2 to 4 players. Against the AI it is you and one opponent; online rooms take up to 4, with AI players filling empty seats if the host wants.
  • Each round shows the tiles for 3 seconds, then the target, then a 3-minute clock starts.
  • Tap a tile (or press Buzz, or Space) to take the buzzer, then pick three tiles within 10 seconds.
  • A match is 5 rounds by default, or 10 like the show.
  • Tie: the tied leaders play one sudden-death round. The first correct answer wins it; wrong answers still cost a point. If nobody scores before the round ends and it is still tied, the game is a draw.
  • The AI solves the same public board. Its difficulty is how fast it spots an answer and how often it says the wrong letters.

Keyboard: type A to J to pick tiles, Backspace to undo a pick, Escape to clear (solo).

Strategy

Start from the target. Look at the target and ask which multiplication gets close to it. Products usually do the heavy lifting, and the + or − tile fixes the rest.

Remember the free first slot. The first tile’s operator does not count, so a tile like ×6 or ÷6 can be used as a plain 6 when it comes first. Many players forget this.

Try every order. Once you find three tiles that work, check the other orders of the same tiles. A + B × C and C + B × A often both work, and each valid order is a separate point.

Mind the maths order. In B, A, C above, the multiplication happens first. Reading left to right by mistake is the easiest way to lose a point.

Watch the count. When you have found 6 of 7, the last answer is worth hunting for. In a duel, the player who finds it also ends the round.

Only buzz when sure. A wrong answer costs as much as a right one earns, and the 10 seconds go quickly. Have all three letters ready before you press.

Questions people ask

Can you play Formula Pyramid online?

Yes. Mindverse has a free Formula Pyramid with a daily pyramid, a practice mode, a buzzer race against one AI, and online rooms for 2 to 4 players.

Why is the first operator ignored?

Three tiles only need two operators between them. The first tile you name just supplies its number, and the operators on the second and third tiles do the work.

Does the order of the tiles matter?

Yes. The same three tiles in a different order can give a different result, and each order counts as its own answer.

Do you use normal maths order?

Yes. Multiplication and division are worked out before addition and subtraction.

Can you use the same tile twice?

No. An answer needs three different tiles.

Is there a penalty for a wrong answer?

Yes. A wrong answer, no answer within 10 seconds, or repeating an answer already given all cost 1 point.

Do divisions have to come out exact?

Yes, in our version. Every division in the formula must give a whole number, or the answer is wrong.

How many answers does each target have?

Every target has between 2 and 10 answers, and the count is shown during play, for example "Found 3 of 7".

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