Saw a 40% jump in CTR after switching headlines to odd numbers

Started testing numbered lists with odd digits like 7 and 9 instead of 10 and saw the shift within two weeks on three different campaigns. Anyone else notice odd numbers beating even ones on your ad copy?

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2 Comments

the_faith2mo ago

Placebo effect or just random luck. Even numbers stick in your head better and actually make people feel like they know the full scope of what they're getting.

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jenkins.reese2mo ago

Odd numbers just feel more specific and believable, like a real person picked them instead of a round number.

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