How do you get Abra in Pokemon LeafGreen?

Answer 1

You find it in the grass on route 24/25,

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I have found many of them in the town

with the water gym, across the bridge,

and on the left where the grass is.
On route 24 in the grass its hard to catch, or buy one at the celadon city game corner exchange with your game corner coins its not expensive at all.