Test Your Visual Processing Speed! Can You Spot The Hidden Number 739 Among 789s In 30 Seconds?

Jan 30, 2026, 14:13 IST

Optical illusion puzzles test your brain's ability to recognise patterns quickly and efficiently. Solving visual illusions to find the hidden numbers can reveal your visual acuity, attention to detail, and mental speed. Can you spot the number 739 hidden among the pool of 789s in just 30 seconds?

Find the hidden number 739 among 789s!
Find the hidden number 739 among 789s!

Optical illusion puzzles test your brain's ability to recognise patterns quickly and efficiently. Solving visual illusions to find the hidden numbers can reveal your visual acuity, attention to detail, and mental speed. 

These visual illusions are also effective at testing the ability of your brain and eyes to work together to perceive details and anomalies.

Optical illusions involving finding hidden numbers work by tricking your eyes and exploiting the brain's tendency to take visual shortcuts when processing visual information.

See, the human brain is wired to recognise familiar patterns quickly and efficiently. In an image filled with repeating numbers, the brain tends to overlook the subtle variations. 

Since the numbers are camouflaged using similar shapes, colours, and lines, your brain assumes all the digits are similar.

Under time pressure, the brain often makes shortcuts or fills in the gaps to prioritise speed and efficiency. That is why a timed optical illusion challenge is more fun, thrilling, and effective at assessing your brainpower.

Solving optical illusions reveals you possess strong perceptual skills such as visual perception, the ability to distinguish subtle differences in shapes, patterns or outlines, the capacity to focus on minute details, and the mental speed to process and make a decision to arrive at the correct solution.

With so many benefits, optical illusions are a powerful way to test your visual powers. Let us get to your challenge for today. Are you ready?

Optical Illusion IQ Test: Can you spot the hidden number 739 among 789s in just 30 seconds?

find-hidden-number-optical-illusion

Optical illusions that hide a different number among a sea of identicals require you to be extra attentive and mentally sharp to notice the subtle difference to find the hidden number.

Here is an optical illusion challenge that will test your visual processing speed, attention to detail, and focus.

There is the number 739 hidden among the pool of 789s, and your challenge is to spot the odd one out before time runs out.

Do not look at the entire image or randomly glance, this might trick your brain into assuming that all the numbers are identical.

But there is number 739 hidden in plain sight. You just got to be extra observant to find it.

Scan the image thoroughly. Examine each row and column systematically. The hidden number might be blending with the similar-looking 789s. 

Keep an eye out. Look for a change in the shape of digits (e.g., a 3 instead of a 8).

Any luck so far?

Optical Illusion Answer

Did you find the hidden number? Here is the solution below. Scroll down to see if you got it right. Tell us in the comments if you solved this optical illusion in the given time limit.

Roopashree Sharma
Roopashree Sharma

Deputy Manager

Roopashree Sharma is a seasoned content writing professional with over 5 years of experience in digital journalism, specialising in writing explainers and IQ quizzes across education, healthcare, finance, governance, science, and the trending desk. She holds a degree in Journalism and Mass Communication and has contributed to leading media houses, including Zee, Times, and India TV. Currently serving as Deputy Manager – Editorial at Jagran New Media, she writes and produces videos for the General Knowledge (GK) section of the Jagran Josh (English) portal. For inquiries, contact her at roopashree.sharma@jagrannewmedia.com.

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