# How many synapses in the average human brain?

Knowing there are 100,000,000,000 neurons in an average human brain, and 7,000 dendrites in each neuron, and neurons are connected to each other by dendrites and axon terminals, how many synapses are there in an average human brain? (I don't know how many axon terminals per neuron there are on average.)

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well this what I learned using this beatiful schema :) en.wikipedia.org/wiki/Neuron#mediaviewer/… –  mounaim Aug 12 at 12:02

For the less mathematically inclined, $1.5 \times 10^{14} = 100,000,000,000,000$, or 150 trillion. –  Eoin Aug 11 at 11:04