» Selecting a Set of Random Numbers, Avoiding Duplicates

CATEGORY - Excel Formula and Function VERSION - All Microsoft Excel Versions

Problem:

Selecting a set of 5 random numbers between 1 and 10, without getting duplicates.

Solution:

In Data Range (A1:C11):

Step 1:
Enter RAND function in column A:
=RAND()

Step 2:
Enter the following RANK formula in column B:
=RANK(A2,$A$2:$A$11)

Step 3:
Enter the numbers 1-10 in column C.
In Lottery Range (A14:B19):
In column B, use the VLOOKUP and ROW functions in the following formula:
=VLOOKUP((ROW()-ROW($A$19)+1),$B$2:$C$12,2,FALSE)
As a result, 5 unique random numbers between 1 and 10 will be displayed in column B.
The numbers will change with each recalculation (press the key).