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To use the date function in Excel, type =TODAY() into a cell and press
the Enter key on your keyboard. This will insert the current date.

RAPID RECALL Tick ( ) if you know this.

1. Formulas in Excel start with an equal to (=) sign.

2. Cell referencing refers to using the address of a cell in a formula to refer to its value.

TYPES OF ERRORS

An error occurs when a formula or function in Excel cannot be calculated properly. This may
happen due to incorrect data, incorrect formulas or invalid references. Let’s understand the
types of errors.

Error Name Purpose Example Description
#DIV/0! Occurs when a number is =10/0 Division by zero is undefined.
divided by zero.

#NAME? Occurs when a formula name =SUMM(A1:A5) “=SUMM” is not a valid
is incorrect or misspelled. (wrong spelling) function. “=SUM” is valid.

#VALUE! Occurs when the wrong type =5 + “Hello” You cannot add a number
of data is used in a formula. and a text string together.
#REF! Occurs when a cell reference =A1 + B1 (after Reference to B1 is no longer
is deleted or invalid. deleting B1) valid.

#N/A Occurs when a value is not =VLOOKUP “Apple” is not found in the
available to a function. (“Apple”, A1:B5, range A1:B5.
2, FALSE)

#NUM! Occurs when a number is =SQRT(-1) You cannot take the square
invalid in a formula. root of a negative number.

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