Identify which of the following Formula is wrong =(B5) *7C =Sum(B3:B5) =23+45–Sum(B5:B9) =SUM(23+45)/(SUM(B5:B9))

The incorrect formula is =(B5) *7C. In Excel, this formula is not valid because "7C" is not a valid operation. The multiplication operator () should be followed by a number or a cell reference, not a string of characters.

The other formulas are correct, assuming that the cells they refer to contain the appropriate values.

=Sum(B3:B5) is a formula that adds up the values in cells B3 through B5.

=23+45–Sum(B5:B9) is a formula that adds 23 and 45, then subtracts the sum of the values in cells B5 through B9.

=SUM(23+45)/(SUM(B5:B9)) is a formula that adds 23 and 45, then divides the result by the sum of the values in cells B5 through B9.