Replace values of matrix by multiples

Write the instruction that replaces the values of A that are multiples of 10 by 999

I got this so far: A=A(mod(10,999)==0)

Im not sure of it though.

[James Tursa]

Try doing just the first part. Does the expression mod(10,999) determine if anything is a multiple of 10?

[Mansour Al Asais]

I honesly don't know

[the cyclist]

Think of this as a two-step problem:

1. identify the entries that are multiples of 10
2. replace those with 999

You don't need to use the value 999 at all for the first part.

You are on the right track in using the mod function. But remember you that you are trying to find elements of A that are even multiples of 10. So, think of how to use A and 10 as your inputs.

[Mansour Al Asais]

(mod(a,10)==0)=999

Answer 1

[David Hill]

A(mod(A,10)==0)=999;