Brain Teaser IQ Test: Which Cup Will Fill First? Only 1 In 100 Can Answer In 8 Seconds!

This is an incredible brain teaser challenge that will test your IQ and observation skills! Brain teasers are a great way to exercise your mind, improve problem-solving skills, and enhance cognitive function.

Personality test: How you stand reveals your hidden personality traits

Today we present a popular puzzle that has puzzled many people: Which cup will fill up first? With only 8 seconds to find the answer, this test will measure your intelligence, attention to detail and speed.

Are you ready to take on the challenge and prove your intellectual prowess?

Brain teasers and answers

Still looking for the right answer? Check out the answers below.

Brain teaser: Which glass will fill up first? Answers

Share this brain teaser with your friends and family. Challenge them to tell which cup will fill up first in 8 seconds or less!

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