# Help to solve 3 problems! I will give 18 points. 1. Delete in number 14563743 three figures so that the turned-out number was divided into 22. 2. At the beginning of a year the number of subscribers of the telephone company "the East " made 300 thousand people, and in their end of the year there were 375 thousand people. By how many percent did the number of subscribers of THIS company increase in a year? 3. In the house in which there lives Galya, 5 floors and several entrances. On each floor there are about 3 apartments. Galya lives in apartment No. 69. In what stairwell does Galya live? URGENTLY!

Chivotnab

178

The number is divided into 22 in only case when it is divided into 11 and on 2. On 2 only the even number shares without the rest. Means the last three we remove. 1456374 remained the Criterion for divisibility by 11 the Number is divided into 11 in only case when the sum of figures with the alternating signs is divided into 11 (that is 182919 is divided into 11 as 1 - 8 + 2 - 9 + 1 - 9 =-22 is divided into 11). 1-4+5-6+3-7+4 =-4, and to us needs result = 11 or 0, will remove-5+3 = 4, and-4+4 = 0 we Will receive: 1-4+6-7+4 = 0 therefore 14674 is divided into 11 and 2, so and on 22!!! 14,674: 22 = 667!!! No. 2 300 = 100,375 * 100: 300 = 125,125-100 =25 increased in a year number of subscribers of THIS company No. 3 5 * 3 = 15 apartments in each stairwell 69: 15 = 4 entrances and 9 apartments in 5 ohms. Answer: Galya lives in apartment No. 69. In the 5th stairwell on the 3rd floor!

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