Question

(18
4(460)
4 and 72
0823 5 G
What will be the sum of adding all the possible four-digit numbers formed
7.9. 1. 3 using each of the digits only once?
(1) 133220 (2) 122320 (3) 133230 (4) 133320
Hint : Each of the given digits will occur six times in the units place and th
will be 4 groups of 6 numbers each.)
EXERCISE 1.2
What will be the sum of adding all possible three-digit numbers formed by 4,6,9
using each of the digits only once?
(1) 4128 (2) 4218 (3) 4182 (4) 4281
Which of the following is the smallest six-digit number having digits other than 4and 7
(1) 103256 (2) 103265 (3) 102356 (4) 102365​

Answer 1

Answer:

4) 133320

(4) 4281

(2) 103265