Substitute the corresponding figures for the letters, and then work out the addition sum which they represent.
8. A WORD SQUARE
Can you complete this word square?
| T | . | . | . | T |
| . | T | . | . | . |
| . | . | O | . | . |
| . | E | . | S | . |
| T | . | . | . | S |
9.
Take the twelve first prime numbers, 1, 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, which have no factors but themselves and unity, and write down the value of their product, using no figures but 0, 1, 2, and 3, and of these using 2 and 3 only once.