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All articles MATH How to Use the Excel RANDBETWEEN Function

# How to Use the Excel RANDBETWEEN Function

We can use the excel RANDBETWEEN function to generate random numbers in excel. The steps below will walk through the process.

Figure 1: Result of RANDBETWEEN function for Cells of Column D

## General Formula

`=RANDBETWEEN(bottom,top)`

• Bottom – This is the smallest random integer that will be returned by the RANDBETWEEN function. It is the lowest value in the range.
• Top – This is the largest random integer that will be returned by the RANDBETWEEN function. It is the highest value in the range.

## Formula

`=RANDBETWEEN(B4,C4)`

## Setting up the Data

• We will set up the data by inputting the LEAST COST and HIGHEST COST into Column B and Column C respectively
• Column D is where we want the formula to return the result for the random numbers

Figure 2: Setting up the Data

## Getting the Random Numbers

• We will click on Cell D4
• We will insert the formula below into the cell

`=RANDBETWEEN(B4,C4)`

• We will press the enter key

Figure 3: Result of RANDBETWEEN function for Cell D4

• We will click on Cell D4 again
• We will double-click on the fill handle (the small plus sign at the bottom right of Cell D4) and drag down to copy the formula into the other cells

Figure 4: Result of RANDBETWEEN function for Cells of Column D

## Notes

• RANDBETWEEN function generates a new random number if you click on an existing cell with the formula
• RANDBETWEEN function generates a new random number after every recalculation
• To retain random numbers, press the F9 button after using the RANDBETWEEN function in the cell.

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Solution examples
I'm Apply a =RANDBETWEEN formula in one cells want to apply Formula to entire column and run formula when i hit the entire on the particular cell
Solved by M. S. in 20 mins
Help! In a coin toss I have a 1 in 2 (fifty-fifty) chance of getting heads or tails. I need a formula to determine my chance of getting 4 heads in a row or 4 tails in a row out of 10 coin tosses. If I get 4 in a row I win. What formula can I use to determine my chances of winning if I repeat the 10 tosses for hundreds or thousands of times? I get as far as =RANDBETWEEN(0,1) but I have not been able to figure out what formula to use to determine if there are 4 in a row in a group of 10 tosses, times thousands of groups with 10 tosses in each group. Thank-you for any help you can provide.
Solved by V. F. in 51 mins
I have 4 column. when i fill the first 3 column. in 4th column i need a unique id number and i generate unique id number using RANDBETWEEN formula [ =CHAR(RANDBETWEEN(65,90))&CHAR(RANDBETWEEN(65,90))&RANDBETWEEN(1000,9900) ] but i want ..... when i'm filling the 3 column after that 4th column run this formula and generate unique id automatically
Solved by X. Q. in 20 mins
when i fill column A and B then C column generate Unique ID using RandBetween Formula {=CHAR(RANDBETWEEN(65,90))&CHAR(RANDBETWEEN(65,90))&RANDBETWEEN(1000,9900)} ...
Solved by S. Q. in 20 mins