Question

Are any of the following statements is correct :
in . 2 | a 2 ⇒ | a + 2
ii) 2 | a + 2 ⇒ 2 | A
iii) 2 | a ⇔ 2 | a + 2
for integers a ?

Answer 1

The mathematical language allows very little room for typos.
Could you check if there's any typo in the question?
Example:
is it i) 2|a^2 => 2|a + 2, or is it
i) 2|a+2 => 2|(a+2)
?
etc.
All exponents must be preceded by ^, and parentheses cannot be omitted.
Does A (in (ii) ) mean the same thing as a?