What is a maximum number of objects we can immediately grasp at eye, without counting?

Question

I would also appreciate if you can explain or give some references.
Thanks :)

OK, I can see 3 apples, but I can not see the 20 of them before I count them. That was what I meant. But what is the maximum and why?

Answer 1

I think that experiments give the answer as seven (7), which is also the number of digits or letters we can hold in short-term memory, like a phone number. No reason why is given; it just seems to be the limit for our brain at doing that task.

Answer 2

three shd be very normal count at a grasp ever there are more , it in our brain to know that our eyes do play trick on us so we tends to accepts the initial three that we are confirmed to be real

Answer 3

My maximum is 37.