Q. 2.     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.)

Answers (1)

(a) 3, 8, 7

8873 is the greatest while 3387 is the smallest

(b) 9, 0, 5

9950 is the greatest while 5009 is the smallest

(c) 0, 4, 9

9940 is the greatest while 4009 is the smallest

(d) 8, 5, 1

8851 is the greatest while 1158 is the smallest 

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