Question

записать все числа от 1 до 10 с помощью четырех 7 с помощью знаков ( ) , . + -

Answer 1

(7+7) : (7+7)=1
7 : 7 + 7 : 7 = 2
(7+7+7) : 7=3
77 : 7 - 7 = 4
7 - (7+7):7 =5
(7 * 7 - 7):7 = 6
(7-7):7+7=7
(7*7+7):7=8
(7+7):7+7=9
(77-7):7=10 

Answer 2

Writing Numbers from 1 to 10 using Four 7s and Parentheses

To write all the numbers from 1 to 10 using four 7s and parentheses, we can use the following expressions:

1. 1 = 7 - 7 + 7 - 7 2. 2 = 7 ÷ 7 + 7 - 7 3. 3 = (7 + 7 + 7) ÷ 7 4. 4 = (7 - 7) × (7 + 7) 5. 5 = (7 + 7 + 7 + 7) ÷ 7 6. 6 = (7 + 7) - (7 ÷ 7) 7. 7 = 7 + 7 - 7 + 7 8. 8 = (7 + 7) + (7 - 7) 9. 9 = (7 + 7 + 7) - 7 10. 10 = (7 × 7 - 7) ÷ 7

These expressions use the four 7s and the operations of addition (+), subtraction (-), multiplication (×), and division (÷) to represent the numbers from 1 to 10.

Please note that these expressions are just one possible way to represent the numbers using the given constraints. There may be other valid expressions as well.

I hope this helps! Let me know if you have any other questions.