Question

write the greatest and the smallest 4-digit numbers using four different digits with the condition that 5occurs at tens place​

Answer 1

Answer:

Greatest 4 digit number = 9999

Greatest 4 digit number with 5 at tens place using different digits = 9857

Smallest 4 digit number = 1000

Smallest 4 digit number with 5 at tens place using different digits = 1052

Answer 2

Answer:

First you have to ensure that 5 must be there in tens place.

IF YOU WANT TO MAKE SMALLEST

Now, you have to put the four different smallest digits to make it smallest at one's, hundreds and thousands place in increasing order from right to left. But you can't put 0 on thousands place as then it becomes a 3 digit number. Answer is given below:

1052

IF YOU HAVE TO MAKE GREATEST

Now, you have to do all things opposite to make it greatest. You have to put four different largest digits on all places except the tenth place in decreasing order from right to left. Answer is given below:

9857

Hope you understand it.