How to count number of numbers in strings using array formula?

Question

Google Sheets

In three columns: A, B, C - each cell is randomly worth any number or nothing.

In column D, you need to count the number of cells filled with numbers on each row. This is done by the formula =COUNT(A1:C1) The

question is how to do this using ArrayFormula so as not to stretch the formula to all cells?

Answer 1

Like this, for example:

=ArrayFormula(
  ЕСЛИОШИБКА(A:A/A:A;0)+
  ЕСЛИОШИБКА(B:B/B:B;0)+
  ЕСЛИОШИБКА(C:C/C:C;0)
)

Demo table

Answer 2

Grigory Boev , this is incredible! Just unbelieveble.