Cryptograms

Intro

Concept Quizzes

Cryptogram Warmup
Algebraic Techniques - Cryptograms
Number Theory Techniques - Cryptograms
Cryptogram - Problem Solving

Challenge Quizzes

Cryptograms: Level 1 Challenges
Cryptograms: Level 2 Challenges
Cryptograms: Level 3 Challenges

Algebraic Techniques - Cryptograms

$\begin{array}{ccccc} & & & & 1&3 \\ + & & & & \bigtriangledown &7\\ \hline & & & 1 & 0 &0 \end{array}$

Find the value of $\bigtriangledown$ satisfying the cryptogram above.

6 7 8 9

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by Brilliant Staff

$\begin{array}{ccccc} & & & & \spadesuit&2 \\ & & & & \spadesuit&\spadesuit\\ + & & & & 1 &\spadesuit\\ \hline & & & & 7 &8 \end{array}$

Find the value that represents the symbol $\spadesuit$ .

1 2 3 4

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by Brilliant Staff

$\begin{array}{ccccc} & & & & 9 &P \\ - & & & & P & Q \\ \hline & & & & Q & 6 \end{array}$

Find the value of 2-digit integer $\overline{PQ}$ .

26 37 48 59

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by Brilliant Staff

$\begin{array}{ccccc} & & & & \color{#D61F06} A & B \\ + & & & & \color{#D61F06} C & D \\ \hline & & & & \color{#D61F06} E & F \end{array}$

The cryptogram above shows the sum of two 2-digit integers producing another 2-digit integer. In the leftmost column highlighted in red, which of the following cannot be true?

A+C=E

A+C=E+1

A+C=E-1

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by Brilliant Staff

$\begin{array}{ccccc} & & & & 9 &5 \\ - & & & & 1 &\blacktriangle \\ \hline & & & & \blacktriangle & 8 \end{array}$

Find the value that represents the symbol $\blacktriangle$ .

6 7 8 9

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by Brilliant Staff