2. Solve the equation.

5×(2x+7)-30=3×(2x+7) x=

3. The number on 106 to the right of the circular decimal point of 0.37205 is.

4. A row of telephone poles, the distance between two telephone poles used to be 35 meters, but now it is 45 meters. If one position of the starting point does not move, at least one pole does not need to move.

The speed of a ship in still water is18km, and it takes 4 hours to travel 80km along the river. The current velocity of this river is.

6. The students went for a spring outing. There are 78 people with kettles, 77 people with fruits, and 48 people with both kettles and fruits. Students from * * * will take part in the spring outing.

8. The smallest four digits that can be divisible by 3, 4 and 5 at the same time is.

9. For a game, the perfect score is 100, and everyone can do it four times to divide the average score of the game. Xiao Wang's average score is 85, so his score in any game can't be lower than 10.

10. In the fifth-grade math contest, the product of Xiaoming's ranking times his age and contest results is 2 134, and Xiaoming's ranking name and score are points.

1 1. There is a six-digit □2002□ divisible by 88. This six-digit number is.

12. Make a formula with four numbers: 5, 5, 5, 1, and the result is 24. The formula is.

13. There are six classes in Grade Five, and the number of students in each class is the same. Each class chooses 16 students to participate in the Young Pioneers activities, and the remaining students are equivalent to the original four classes.

14. The sum of five consecutive odd numbers is 95, of which the largest is and the smallest is.

The sum of 15. 1+2+3+4+5 ... +2007+2008 is. (odd or even)

16. Seven of the eight rooms have lights on. If you toggle the switches in four rooms at the same time, you can (or can't) turn off the lights in all rooms, toggle the switches in five rooms at a time, and (or can't) turn off the lights in all rooms.

17. Hang lanterns on New Year's Eve, which are bright and brightly lit. When you count to three, you can count it all. There is one left when the number is five or five, just right when the number is seven or seven, and there are still three missing when the number is eight or eight. Please guess for yourself, there is at least one lantern.

18. Four students, A, B, C and D, made different fouls in the basketball match. Four referees, A, B, C and D, talked: A said, "A fouled four times, and B fouled three times." B said, "C fouled 4 times and B fouled 2 times." C said, "Ding fouled twice and C fouled three times." D said, "Ding fouled 1 time, and B fouled 3 times." The recorder said, "The judges A, B, C and D were only half right." Bad times.

19. Party A, Party B and Party C work in Nanjing, Suzhou and Xi 'an respectively. Their occupations are workers, farmers and teachers. It is known that (1) A does not work in Nanjing, (2) B does not work in Suzhou, (3) A worker works in Suzhou, (4) A teacher does not work in Nanjing, and (5) B is not a farmer. So, a is, at work.