Logic

Cryptograms

Number Theory Techniques - Cryptograms

         

AB×9C23 \begin{array}{ccccc} & & & & A&B\\ \times & & & & &9 \\ \hline & & & C & 2 &3 \end{array}

Use the divisibility rules of 9 to find the value of CC.

 9×3X333 \begin{array} { l l l l } & & & & \ 9 \\ \times & & & 3 & X \\ \hline & & 3 & 3 & 3 \\ \end{array}

What digit XX satisfies the cryptarithm above?

5P×QR800 \large{\begin{array}{ccccccc} && & & & & 5& P \\ \times && & & & &Q &R\\ \hline & & & & & 8& 0&0 \end{array}}

Knowing that 800=25×52800 = 2^5\times5^2, find the value of the 2-digit integer QR\overline{QR}.

4E×21F45 \large{\begin{array}{ccccccc} && & & & & 4& E \\ \times && & & & & 2&1 \\ \hline & & & & & F & 4 & 5 \end{array}}

Determine the value of FF.

E×E3E \large{\begin{array}{ccccccc} && & & & & & E \\ \times && & & & & &E \\ \hline & & & & & & 3 & E \end{array}}

Find the value of EE.

×

Problem Loading...

Note Loading...

Set Loading...