Last night me and some friends were out and about trying all sorts of openers talking to many different people was curious if this trick worked pretty well so we gave it a couple shots after an opener and some small talk

ME:pick a number between 1-50 but the number must be double digits and both numbers must be odd dont tell me your number... do you have your number?
HB: 17! (she obviously didnt understand the rules) so i would neg her a little bit if u have any suggestions on a good neg when this happens please feel free to share, I would say something along the lines of wow someone cant listnen or something to that extent
HB: OH okay i got it im ready
ME: 37
HB in complete awe about how I knew that asking how I knew she would pick that sometimes I wouldnt tell them how i got it other times i told the the base of it about 3 and 7 being the most common numbers between 1-10 then go on about how there not original

I did this trick 3 times 2 of the 3 told me there number as soon as they thought of it (actually wasnt 37 then when they thought of another and kept it to them self it was 37)
but actually guessed the number right 3/3 times i was actually kind of shocked

what would be some good next steps if you get it right
and what would be some good next steps if you get it wrong

Last night me and some friends were out and about trying all sorts of openers talking to many different people was curious if this trick worked pretty well so we gave it a couple shots after an opener and some small talk

ME:pick a number between 1-50 but the number must be double digits and both numbers must be odd dont tell me your number... do you have your number?
HB: 17! (she obviously didnt understand the rules) so i would neg her a little bit if u have any suggestions on a good neg when this happens please feel free to share, I would say something along the lines of wow someone cant listnen or something to that extent
HB: OH okay i got it im ready
ME: 37
HB in complete awe about how I knew that asking how I knew she would pick that sometimes I wouldnt tell them how i got it other times i told the the base of it about 3 and 7 being the most common numbers between 1-10 then go on about how there not original

I did this trick 3 times 2 of the 3 told me there number as soon as they thought of it (actually wasnt 37 then when they thought of another and kept it to them self it was 37)
but actually guessed the number right 3/3 times i was actually kind of shocked

what would be some good next steps if you get it right
and what would be some good next steps if you get it wrong

Don't talk about the "base of the numbers". Math is not sexy. The idea you and she are on the same psychological level is genuinely appealling to women, go with that, "We have this amazing connection...we must be soulmates...destined to meet... blah blah blah etc etc".
Remember no one likes a lecture, so put it on her "how did you do that? You reading my mind...?".

If she gets it wrong, well...I never let her get it wrong. Go "wow that's amazing" in mock astonishement. Really stupid girls will actually kinda buy this, most won't so make sure you do this with humor.

This is an effective strategy. I do something similar but I ask them to think of a card, 7 being the most likely. I keep an a seven of hearts in my pocket at all times for this purpose. Producing something visual is way more compelling and visceral than just saying you got it right and boring her with an explanation.