Problems

A girl chose a 4-letter word and replaced each letter with the corresponding number in the alphabet. The number turned out to be 2091425. What word did she choose?

Using five twos, arithmetic operations and exponentiation, form the numbers from 1 to 26.

Using five threes, arithmetic operations and exponentiation, form the numbers from 1 to 39.

Using five fours, arithmetic operations and exponentiation, form the numbers from 1 to 22.

Using five fives, arithmetic operations and exponentiation, form the numbers from 1 to 17.

Using five sixes, arithmetic operations and exponentiation, form the numbers from 1 to 14.

Using five sevens, arithmetic operations and exponentiation, form the numbers from 1 to 22.

Using five eights, arithmetic operations and exponentiation, form the numbers from 1 to 20.

Using five nines, arithmetic operations and exponentiation, form the numbers from 1 to 13.

Try to read the word in the first figure, using the key (see the second figure).