Question

Form the smallest and the greatest 4-digit numbers using 4,0,7 and 8 without repeating the digits. ​

Answer 1

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(i) The given digits are 3, 7, 2 and 5

(a) The greatest 4-digit number = 7532

(b) and the smallest 4-digit number = 2357

(ii) The digits are given : 6, 1, 4 and 9

(a) The greatest 4-digit number = 9641

(b) and the smallest 4-digit number = 1469

(iii) The digits are given 7, 0, 4 and 2

(a) The greatest 4-digit number = 7420

(b) The smallest 4-digit number = 2047

(iv) the digits are given 1, 8, 5 and 3

(a) The greatest 4-digit number = 8531

(b) and the smallest 4-digit number =1358

(v) The digits are given 9, 6, 0 and 7

(a) The greatest 4-digit number = 9760

(b) and the smallest 4-digit number = 6079

Answer 2

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(i) The given digits are 3, 7, 2 and 5

(a) The greatest 4-digit number = 7532

(b) and the smallest 4-digit number = 2357

(ii) The digits are given : 6, 1, 4 and 9

(a) The greatest 4-digit number = 9641

(b) and the smallest 4-digit number = 1469

(iii) The digits are given 7, 0, 4 and 2

(a) The greatest 4-digit number = 7420

(b) The smallest 4-digit number = 2047

(iv) the digits are given 1, 8, 5 and 3

(a) The greatest 4-digit number = 8531

(b) and the smallest 4-digit number =1358

(v) The digits are given 9, 6, 0 and 7

(a) The greatest 4-digit number = 9760

(b) and the smallest 4-digit number = 6079