Each question involves setting up an inequality from a word problem about consecutive integers. Read carefully — the tricky part is always in the phrasing.
If first = x, then:
x, x+2, x+4, x+6 …
(skip by 2, not 1)
"at most 26" means
≤ 26
not less than, not equal only
"at least 10" means
≥ 10
includes equals
"26 less than X" means
X − 26
NOT X < 26 !
"5 more than X" means
X + 5
addition, not comparison