What is the difference between the largest and the smallest possible distinct 4-digit number that you can make from four digits 0, 4, 2 and 3?

Using each of the digits 3, 4, 5 and 6 exactly once to form two 2 - digit numbers. What is the difference between the largest possible product and the smallest possible product of two such numbers?

Using each of the digits 2, 3, 5 and 6 exactly once, form two 2 – digit numbers. What is the difference between the largest possible product and the smallest possible product of two such numbers ?

Using each of the digits 2, 3, 5 and 6 exactly once, form two 2 – digit numbers. What is the difference between the largest possible product and the smallest possible product of two such numbers

 What is the difference between the greatest and the smallest four-digit number that each formed by different digits?

Using each of the digits 2, 3, 5 and 6 exactly once, form two 2 – digit numbers. What is the difference between the largest possible product and the smallest possible product of two such numbers

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Câu 1) the number is 13 less than 38?
Câu 2) The number of divisors of 1000?
Câu 3) The side in decimeters of a square whose are 16 900cm2?
Câu 4) What is the difference between the largest and the smallest 2-numbers that can be formed by the four digits 0,5,6 and 2?

How many 5-digit numbers contain all the digits 1, 2, 3, 4 and 5 and have the property that the difference between each pair of adjacent digits is at least 2?

Giúp mình giải bài toán bằng tiếng anh với. Mình cảm ơn nhiều!

Bài 1. The number of fractions m/n such that m + n = 2016 is..........?

Bài 2. Using each of the digits 2,3,5 and 6 exactly once, form two 2-digit numbers. What is the difference between the largest possible product  anf smallest possible product of two suchnumber?