Multiple choice general knowledge

There are about __________ neurons in the human brain, the same number of stars in our galaxy.

  1. 1 trillion

  2. 100 million

  3. 100 billion

  4. 100 thousand
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The human brain contains approximately 100 billion neurons. Recent research suggests 86 billion, but 100 billion remains the widely cited figure. This number is remarkably close to estimates of stars in the Milky Way galaxy. Options A, B, and D are incorrect by orders of magnitude.

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