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Excel COUNT Practice Question: New customers get the next serial number. Using COUNT, find the next serial…

By Rinkesh Shah, founder of Cellgrids.

The question

New customers get the next serial number. Using COUNT, find the next serial number and put it in D2.

The data

ABCD
1SerialCustomerNext serial
21Asha?
32Ben
43Chitra
54Dev
65Esha

The yellow cell is where your answer goes.

Show answer

Answer in D2: 6

How it works

Explanation: Counting the existing serial numbers and adding 1 gives the next one. It updates by itself as you add rows.
Syntax: =COUNT(A2:A6)+1
There are 5 serial numbers. 5 + 1 = 6.

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COUNT syntax

=COUNT(value1, [value2], ...)

Counts how many cells in a range contain numbers. COUNT is used in data analysis work to summarize or test patterns across a data set. Full COUNT guide.

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