(i) 6, 9, 2, 4
(ii) 7, 0, 3, 8
8. Using the given digits without repetition form the smallest and the greatest 4-digit numbers.
Answers
Step-by-step explanation:
1. 9642,2469
2.8370,3078
Hey !
Steps :
(A) Find the smallest number without repetition of the digits.
Here, we have 4 digits, to get the smallest number, just arrange them in ascending order.
At first place, it can be the smallest of all. (Except zero, as it makes the 4-digit number as 3-digit when it comes at the first place)
At second place, it can be the no. other than used and smallest of remaining
And so on
(B) Find the greatest number without repetition of the digits.
Here, we have 4 digits, to get the greatest number, just arrange them in descending order.
At first place, it can be the greatest of all.
At second place, it can be the no. other than used and greatest of remaining
And so on
Answer:
(I) 6, 9, 2, 4
A) Smallest :
2 _ _ _
2 4 _ _
2 4 6 _
2469 is the smallest
B) Greatest
9 _ _ _
9 6 _ _
9 6 4 _
9642 is the greatest.
(II) 7, 0, 3, 8
A) Smallest :
3 _ _ _
3 0 _ _
3 0 7 _
3078 is the smallest
B) Greatest
8 _ _ _
8 7 _ _
8 7 3 _
8730 is the greatest