IQ Test: Can You Guess the Next Number in the Sequence in 4 Seconds?
You have the sharpest brain if you can solve the math puzzle in 4 seconds. Attempt now!
IQ tests are a great way to test the intelligence of an individual. By challenging your mind, these puzzles improve your logical thinking, strengthen your pattern recognition, enhance your memory, and develop your analytical abilities.
Practising these tests helps one to build a sharp brain and develop out-of-the-box thinking.
Are you highly intelligent?
Find out now!
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IQ Test: Guess the Next Number

In the image shared above, a number sequence is shown.
Here you can see one number is missing.
Can you solve the math puzzle by finding the next number in the sequence in 4 seconds?
Let’s start!
This math puzzle will test your intelligence and analytical thinking skills.
Look at the image and study the pattern carefully.
Have you found the missing number?
Hurry up; time is running out.
There are only a few seconds remaining.
And...
The time limit is over now!
How many of you successfully solved the math puzzle?
Congratulations to those readers who found the missing number within the time limit.
You people are highly intelligent.
Those who couldn’t solve the math puzzle must regularly practice such challenges to improve their problem-solving skills.
Now check out the solution provided below.
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IQ Test: Solution
In this puzzle the given problem is
1, 3, 6, 10, 15, 21,?
Now, if you study the pattern carefully, you can find that
The sequence is obtained by adding the natural numbers, e.g. 1, 2, 3, ….
Therefore, 1 is followed by 2
Adding 1 + 2 = 3
Next, 3 + 3 = 6
6 + 4 = 10
10 + 5 =15
15 + 6 = 21
And, the last number in the sequence will be 21 + 7 = 28
If you loved solving this math puzzle, share this with your friends and family and see who solves it in the quickest time.
Also, check out some more cool challenges in our recommended reading section below.
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Mriganka Chakraborty is a seasoned digital journalist and communications professional who is currently working as Deputy Manager at Jagran Josh, where he leads the General Knowledge Section. As a subject matter expert with 8+ years of editorial experience, he has created authoritative content that is trusted by millions of readers around the world in Science, History, Geography, Polity, Economy, Sports, and Technology. His extensive expertise in these subjects enables him to present complex topics in an engaging, accurate, and reader-friendly manner to a global audience, making learning addictive and fun.
His background in a wide range of content areas and his ability to move between them make him a trusted voice to readers who want reliable, well-researched content across a variety of disciplines.
In his leisure time, Mriganka enjoys reading fiction novels and watching action and thriller movies, and cricket, which not only hone his storytelling skills but also keep his editorial vision fresh and dynamic.