Question

pls solve my quesions answers.
1) Find the value of the digit a in the number 1235a such that the number is multiple of 3.
2) Find the value of the digit p in the number 25p1 such that the number is multiple of 9.
3) Find the value of the digit b in the number 3b14 such that the number is multiple of 3.

Answer 1

Answer:

1) 7

3)9

Please mark as brainliest.