Q. Can you instantly find the greatest and the smallest numbers in each row?
2. 1473, 89423, 100, 5000, 310
3. 1834, 75284, 111, 2333, 450
4. 2853, 7691, 9999, 12002, 124
By Observing the number of digits and digit in the leftmost place can straight away tell us about the greatest and smallest number
(2) 1473, 89423, 100, 5000, 310
89423 is the greatest while 100 is the smallest
(3) 1834, 75284, 111, 2333, 450
75284 is the greatest 111 while is the smallest
(4) 2853, 7691, 9999, 12002, 124
12002 is the greatest while 124 is the smallest