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The problem of primary school olympiad cycle
The four numbers 2, 5, 7 and 8 make up different four digits. Arrange from small to large. What is the number 16?

The four numbers 2, 5, 7 and 8 make up different four digits. Arrange from big to small. What number is 15?

1-5 five digits * * * You can sort the five digits of 120 from small to large. What's the 52nd number?

200 1 10 1 is Monday. What day is 2009 10 1?

June 65438+1 October1day, 2004 is Thursday. What day is August 1?

3888 stands for 888 triple multiplication. What is the unit number of the calculation result?

□□ Arrange the odd numbers in the picture below, and each column is represented by A, B, C, D and E respectively. What letter does the column of 200 1 represent?

Xiaoxu arranged 100 folded paper flowers in the order of 2 red flowers, 4 yellow flowers and 3 purple flowers. What color is the100th flower? How many flowers are there in three colors?

Xiaoqing put down the accumulated coins in the order of four 1 minute, and the two points were repeated, and the last two were 5 points. He ranks 1 1 1. How many cents is it? How much is this11coin altogether?

In the China lunar calendar, 12 animals, including rats, cows, tigers, rabbits, dragons, snakes, horses, sheep, monkeys, chickens, dogs and pigs, represent the year in turn. If 1 is the year of the rooster, what year is 200 1?

□□ Arrange natural numbers according to the following rules. Which column is 865?

One number is 100 digits, and all digits are 1. If this number is divided by 6, what is the last digit of the quotient?

The students lined up in the order of three sixth graders standing in front, two second graders standing in the middle and three fourth graders standing behind. Xiaoming ranks 90th. What grade is Xiaoming in?