Question

write the greatest and smallest 4-digit numbers using four different digit such that 5 occurs at tens places

Answer 1

Smallest --> 1052

Largest --> 9857

:)

let me just add the explanation

for smallest, its confired 5 is at tens place so we can use 0,1,2 for other places

0 cant be put at thousands places so 1 goes there

0 goes after because 1052 is smaller than 1250

for largest we know 5 comes at tens place so we have 9,8,7 remaining

so it becomes

9857, simple