Can You Solve This Easy Math Problem in Your Mind?

Do you enjoy mental math problems? Here is a quick math question for you. Please try to solve it in your mind.
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I have a quick mental math problem for you.
Fill in the empty squares using the numbers from 1 to 9.
so that each row and each column has the right product.
All the numbers from 1 to 9 must be used.
To make this brainteaser interesting, your challenge is solve it in you mind, so try to avoid pen and paper. And please comment below how much time you took to solve it.
Pause the video and think logically.

[@LOGICALLYYOURS]

Solved in mind: YES Time: 3 min .... not bad :)

[@GamingDragon07]

Same :)

[@DeepakKumar-ld7vj]

Took me less than a minute to solve in mind.

[@joaopedromeira2619]

Hardest thing here is to keep track of the numbers in your mind, but that's a great mind exercise. Thank you for this!

[@thomasharding1838]

Amen on that!

[@jc5318]

Solved in 2 mins. Started with 7 for the last square as common for 21 and 56. Then last row 2x4x7 ( 4 in the center as the large number - 180 in the center). Then last column 1x3x7 for 21 (3 in center as larger number -120 in center) Then it was easy 6x9x1 for 54.

[@LOGICALLYYOURS]

Brilliant !! That was fast

[@robynperdieu3434]

I did mine a little differently. 2x4x7 =56 8x5x3= 120. And 6x9x1=54 Thank you for the brain teaser.😊🇺🇲🪶

[@kush8806]

I also used same approach but I took 5 min

[@sabyasachirimpa]

Even with pen and paper I couldn't solve the problem. By the way I am an investor and a millionaire. 🙂😊❤️

[@friend757]

Don't feel bad. These take practice. I am an RN. I can solve it in 5 minute, but I need pencil and paper to do it in that short of time to keep track of what numbers that I have already used. It's logic not math skill.

[@historiophile7842]

It took me about 5 minutes to solve it. Seeing as only one of the products was odd, I worked out what 3 numbers could combine to form it. I then figured 9 would need to be involved in one of the bigger if not the biggest product. Then factoring.👍

[@Crockist]

I was so excited I got started without keeping track of the time haha. 8 minutes at most, but I'd estimate 5-6 minutes. I did it in my head without paper, though I will say I began with the 21 column instead of finding where 5 was located. I solved it like so: 21 is only divisible by 2 prime factors, meaning the 3 numbers present must be 3, 7, and 1. I then moved onto 54, which had to have a 9 in it. 54/9=6, so the other numbers are either 6 and 1 or 2 and 3. Due to the current ambiguity of the 21 column, we need more information. From here, I also noticed that the 5 had to be in the row and column involving numbers with the number 0 in the ones column. 180/5=36, and that means that the 180 column needed the 9. That means 180 column is 9, 5, 4. 120/5=24, so let's see if 1, 3, or 7 fits there. 24 is not divisible by 7, and 1 would be invalid because 120/5/1 does not equal a 1-digit number. That means it has to be 3, meaning that the other number is 8. The 120 row is 8, 5, 3. 54 is not divisible by 7, meaning that 1 has to go in the 54 row. 54/9=6, meaning that the 54 row is 6, 9, 1, and the 21 column is 1, 3, and 7. By process of elimination, the missing digit on the bottom left is 2. This means that the numbers are, left-to-right, top-to-bottom, is: 6, 9, 1, 8, 5, 3, 2, 4, 7.

[@LOGICALLYYOURS]

I really appreciate your honest reply… and it was almost similar approach… fantastic :)

[@1vader]

Forgot to track the time, a few minutes. Would have been way faster with a pencil, I almost immediately got the idea but I'm not good at keeping track of a bunch of numbers in my head so I took a bunch of time to make sure I didn't just immediately forget what I just figured out again.

[@srikanth1649]

Within 2 mins 3rd column , chose 21 ,7*3*1 Then 3rd row With 7*4*2 Then put 5 in the mid Then found the left 4 numbers 8*5*3 fit for the second row Then made the remaining possibilities

[@manish2359]

Almost 40 seconds

[@LOGICALLYYOURS]

That was lightening fast.. :)

[@vaibhav4435]

It took me 5 minutes to solve it without pen and paper , because I started wrong I filled the first row with (2×9×3) But it didn't work out ;)

[@prateektoshniwal8179]

2 mins in mind.. 21 made it quite easy

[@ahmadmazbouh]

first thing i noticed is the seven then thought about the rest for 5min

[@LOGICALLYYOURS]

Lovely :)

[@friend757]

I have been teaching my 5th grade grand daughter how to do these. I found easiest way to teach her is to have her create these puzzles for me to solve so that she understands the mechanics.

[@pakirvathukatamai8897]

Solved in 1st attempt below 1 mins 21 = 7×3 56 = 8×7

[@JackieMoon22]

Same here. Surprised to see so many people solving it in more than one minute. I feel proud 😁.

[@eBrunoro]

I used a cronometer: 10min45s without any assistance 😁

[@pasindukarunarathna1288]

I sloved within 4 minutes ! I used least common multiple method 🙌

[@gmgames13]

3 minutes, first I solved 21 row(1,3,7), then 56 row(2,4,7), and just 5,6, 8, 9 to put in first square, from second try I have ordered them as well

[@civilengineeringtestprepar5317]

It took me 4-5 minutes to solve but coincidentally my approach was exactly the same as yours, even the order of filling the boxes was same

[@gamefacierglitches]

1-2 mins for me. 3rd column = 1×3×7 by default. 2nd column = 4×5×9 by default. 1st column = 2×6×8 default. Since 120 and 180 are the only multiples of 5, thus 5 is in the center. 2nd row = 8×5×3 by default. 1st row = 6×9×1 by default. 3rd row = 2×4×7 by default.

[@LOGICALLYYOURS]

Good approach!!

[@SillyMooseMedia]

2 minutes, no notes. Started with 5 in the middle because of the 180 and 120 and worked it out from there. The hardest part was remembering where I had placed the numbers.

[@gowtham1405]

Solved in mind: Yes Time took: 5 min 12sec

[@PSRAM-ge6ww]

I solved it . In first row 6,3,3. In 2nd row 2,60,1. In 3rd row 8,1,7.

[@JackieMoon22]

😂

[@iamback4uonly]

30 Seconds. Done.

[@LOGICALLYYOURS]

Lovely!!

[@SaurabhYadav-ys7tm]

Solved in 3 minutes 40 seconds.

[@ritikkothari2787]

Solved in literally like under a minute .. maybe got lucky this time… started with 1 row and the same column so yeah did that under a minute

[@ShivanshSharma]

This was easy. Took about a minute.

[@vbsnbs2]

I play Mathdoku regularly. It took me only 10seconds

[@LOGICALLYYOURS]

Thanks Nimesh for bringing this puzzle game to my notice. It deserves a dedicated video.

[@raizeahamed2754]

Can anyone try solving this puzzle with coding ? I tried to code but I'm unable to think of the proper algorithm

[@saurabhgupta5686]

Solved in 2 mins. I first placed 9. Since 180 and 54 are multiples of 9 , no other no is multiple of 9. Then find position of 5 accordingly to it as 120 and 180 are multiple of 5. Then 4 left in second column to make 180. To make 56 and 21 , 7 will be placed in 3 row n last column. So 2 left in last row to make it 56 and 3 and 1 will be placed in 2nd n 3rd to make it 21. Placed 3 in second row n 1 in first row. Finally 6 and 8 left to make it 54 and 120.

[@jagannathhajib5415]

find the prime factors we get 2,3,5, 7,easy to place 7 at the intersection of 21 & 56; 5 is prime factor for 120 and 180 hence goes in the center intersection . rest can be easily worked out

[@moshemaor1731]

Solved in less than 2 Minutes, but with a pen and paper. The short time to solve, is extracted from the decision, where to start from. Nice problem. Thanks.

[@jootpepet]

I solved it without using the rule "use all the numbers 1-9" (because i paused it before the rule came up) I came up with a different answer but i think its harder that way. The rule just helps you narrow down the answer

[@shivathapa9474]

Just in mind its impossible.Took 2 minutes using pen and paper..

[@LOGICALLYYOURS]

Glad to see you didn’t give up! That’s important of all.

[@fugguhber4699]

21 column 1st about 6 min

[@GouravPandey-y8r]

actually initially i thought its difficult but able to solve it easily (within 1min- 30 sec ) however it was little difficult for me to remember mentally

[@danishsiddique5734]

It took me around 30 seconds to solve, but if someone would have asked me for an explanation at the same time then i would have confused myself!

[@zahidhussain251]

7, 5, and 9 can only fit in specific squares. Then, work out squares for 1 and 3 and rest is easy.

[@samyakjain720]

Easy with paper, Strengthens fundamental of first principle.

[@AbdulKarim-cw8cv]

I applied my number knowledge of 'common factors.'

[@tandeltours1534]

Solve by 9*5*4=180 All got in less than 1 minute

[@shivangisrandomposts2937]

Completed in 4 min, starting with 7, and then fixed the position of 3 and 1.

[@eklavyasingh8143]

I did it in 41 sec I think playing chess blind folded does help visual retention in mind

[@yaduvarma9854]

5 min... Not bad

[@sharan9993]

Time : 3 min 28 secs solving was the easy part keeping track of where i put which number was hard 😂 nicee puzzle.

[@LOGICALLYYOURS]

Haha.. true :)

[@j.r.1210]

I took a few minutes to solve this without paper, but I'm not sure that I would describe the puzzle as "easy." It's just doable.

[@jacoboribilik3253]

Easy meaning the logic behind it is simple. Mental calculation is the hard part, but it has nothing to do with logical reasoning.

[@ramakantpaul950]

Just 1 minute.

[@somebodyswatching2071]

I was able to solve in 3 minutes.

[@LOGICALLYYOURS]

Me too :)

[@bujigh5739]

2 9 3 12 10 1 4 2 7 I started with a 10 in the middle since 120 and 180 and it seems alright this solution as well

[@wholesomeparas1]

Took ~30 sec Start with 21. As 3*7 = 21, position of 7 is known, and so is 3 and 1. Now we know the places of 9 and 6 too, as 96 isn't divisible by 9. Then it gives us 5 and 4 for making the number 180. Rest 8 and 2 would complete the set

[@Hasan...]

3 minutes

[@DaMoNarch91]

@3:04 nice

[@shawnweddle3002]

Solved it in three minutes

[@LOGICALLYYOURS]

Same here:)

[@sarthaksharma3851]

Honestly , I was able to solve the puzzle in just 1 min 😊🙏 that was great 😃👍

[@nandann7500]

1st row 3 18 1 2nd row 4 10 3 3rd row 8 1 7

[@imonkalyanbarua]

Amazing! 👏👏👏

[@atifyaqoob5179]

Took me 5 minutes to solve

[@United_India_Viral]

There is one more solution

[@martinmackey7191]

Just under 3 minutes

[@vangildermichael1767]

that was fun. thx.

[@harishjangir6881]

I took 10 min

[@jonniboye6399]

3-4 mins.

[@colinh2630]

9min for me

[@MindgameR3406]

Solved! 4 mins

[@LOGICALLYYOURS]

Excellent!

[@manyamsunil1020]

1min

[@darrylbatchem8985]

Order of logic 7 3 1 2 4 5 9 6 8

[@debjit811]

6 9 1 8 5 3 2 4 7

[@denism3984]

6 9 1 8 5 3 2 4 7

[@geek_for_life]

Solved in 2 mins...Started with 21. .Since 21 = 7*3*1....Then the Whole Thing will Follow then... 691 | 853 | 247

[@friend757]

I also started with 21. I always knock out combinations that use up prime numbers first.