Question

Make the greatest and the smallest 4-digit numbers using any four different
digits with conditions as given
(a) Digit 7 is always at
Greatest 91867
ones place
Smallest 101217
(Note, the number cannot begin with the digit. Why?)
(b) Digit 4 is always
Greatest
at tens place
Smallest
(c) Digit 9 is always at
hundreds place
Greatest ID
Smallest
(d)
Greatest
Digit I is always at
thousands place
11
Smallest
1​

Answer 1

Answer:

b) 9949

1040

c) 9999

1900

d) 1000

1000