Question

Smallest and greatest 4 digit number for 4

Answer 1

The largest 4-digit and smallest 4-digit numbers formed by using the digits 4,0,3,7 each only once respectively are

(1) 4370, 4307

(2) 3740, 3047

(3) 7403, 3704

(4) 7430, 3047. 3047, 3074, 3407, 3470, 3704, 3740, 4037, 4073, 4307, 4370, 4703, 4730, 7034, 7043, 7304, 7340, 7403, 7430.