Problem 2: 2, 5, 1, 4

First we write in ascending order. For that we read number from 0 to 9

Is there 0 ? no....

Is there 1 ? Yes, then write 1 on black board

Is there 2 ? Yes, then write comma and 2 after above(1)

Is there 3 ? No,

Is there 4 ? Yes, then write comma and 4 after above (1,2,)

Is there 5 ? Yes, then write comma and 5 after above(1, 2, 4)

We get ascending order like 1,2,4,5

Now, we write above number without commas. we get the number 1245. This is smallest number four digit made from given four numbers.

Now write reverse order of ascending order. we get like 5, 4, 2, 1 . This is descending order

Now, we write above number without commas. we get the number 5421. This is biggest number four digit made from given four numbers.

Problem 3: 7, 3, 6, 8

We get ascending order like 3, 6, 7, 8

Now, the Smallest Number = 3678

Biggest number = 8763

Problem 4: 9, 2, 7, 3

We get ascending order like 2, 3, 7, 9

Now, the Smallest Number = 2379

Biggest number = 9732

Problem 1: 5, 1, 0, 9

We get ascending order like 0, 1, 5, 9

We write above and get 0159. This is the 3digit number. This is wrong

So, First we left 0, and start with 1, after that write remaing numbers in ascending order like 1059. this smallest number

We write reverse order of ascending order like 9, 5, 1, 0

we write above numbers without commas like 9510. This is biggest number

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