Question

Now make the greatest and the smallest 4-digit numbers by using any one digit twice.
(a) 3, 8, 7
(b) 9, 0, 5
(c) 0, 4, 9
(d) 8, 5, 1
(Hint : Think in each case which digit will you use twice.)

Answer 1

a-8873
b-9950
c-9940
d-8851

Answer 2

(a) Greatest - 8873
     Smallest - 3378

(b) Greatest - 9950
      Smallest - 5009

(c) Greatest - 9940
      smallest- 4009

(d) Greatest - 8851
      Smallest - 1158