Deductive Reasoning Puzzles With Answers | Best Riddles and Brain Teasers

#481 - Cracking The Password Cipher Puzzle

A guy was writing his first book. After saving the document, he locked his laptop with a password and mentioned some phrases for the hint box.

A friend of his tried opening his laptop but found out that it was password protected. Following is the hint that appeared.
1 mobile 3 books 2 roars 1 night 4 balls 2 lighters 1 ghost 1 hat 3 watches

It seemed awkward to him. Can you help him in cracking the password?

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The password is - Moonlight
If you are wondering how, then the answer lies in the hint only. You have to take the corresponding number letter of each word.
1st in mobile is M
3rd in books is O
2nd in roars is O
1st in night is N
4th is balls is L
2nd in lighters is I
1st in ghost is G
1st in hat is H
3rd in watches is T.

#482 - Logic Birthday Problem

I engaged in a strange activity. My birthday was approaching and I decided to collect money for my birthday bash. On the first day of the month, I kept a dollar in my piggy bank, on the second, I kept two dollars and on the third, I kept three and so on.

On my birthday, I had a total of 276 dollars in my piggy bank. Can you find out on which day of the month was my birthday?

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23rd

The easiest way to find out without engaging in any formula would be to simply add them:
1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 + 11 + 12 + 13 + 14 + 15 + 16 + 17 + 18 + 19 + 20 + 21 + 22 + 23 = 276

Thus, the birthday falls on the 23rd day of the month.

#483 - Match Stick Puzzle

In the given picture, you can find five identical squares. You have to form six identical squares by moving just three matchsticks. How will you achieve it if you are not allowed overlapping or breaking of matchsticks?

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As you can see in the picture, we have lifted the bottom three matches and placed them inside the middle squares vertically (pink ones). We now have six identical squares.

#484 - Awesome Optical Illusion Picture Puzzle

This black and white picture shows a couple by the lakeside. The picture is quite serene. But can you find out something in this picture that does not meet the eyes?

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If you would have concentrated over the branches of the tree, you would have found out. It is a baby face. We have highlighted the picture for you.

#485 - Tricky Cryptogram Puzzle

Below, you can see some coding:
January = 1017
February = 628
March = 1335
April = 145
May = 1353
June = 1064
July = 1074
August = 186

Now deciphering the way it has been coded, can you find out how September will be coded?

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January = 10|1|7
10 is the position of letter J in alphabetical order.
1 is the position of January in months.
7 is the number of letters used in the word January.

Same goes for all the months, thus
September = 19|9|9 (1999).

#486 - Quick Fire Riddle

A couple of thieves looted a bank and ran away. The police got a call and searched for them, followed them and eventually caught them.

The light over the number plate of the thieves car was not working. Also, the police car had a faulty headlight. How did the police manage to catch the thieves?

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It was day time and thus there was no need for headlights or the lights over number plate.

#487 - Movie Rebus Puzzle

There is a movie name hidden in the picture that is attached with this question. Can you find out which movie is it?

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Need for Speed
If you have studied mathematics, you must be knowing that ds/dt refers to speed. Thus the movie title is : Need for Speed.

#488 - Tricky Puzzle Question

Alex opened 24 presents
Jonah opened 8 presents
Clara opened 1 present

Can you find out how many presents were opened by Andrew?

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23 presents were opened by Andrew.
The last letter of Alex is X and it stands of the 24th number of the alphabets.
The last letter of Jonah is H and it stands of the 8th number of the alphabets.
The last letter of Clara is A and it stands of the 1st number of the alphabets.

Similarly W = 23

#489 - Hard Matchstick Puzzle

In the given picture, you can see that there are two matchsticks that have been used to create five squares. You are allowed to move just two matchsticks and must form seven squares. FYI, you cant overlap the matches and you are not allowed to break them. Also, like you can see in the picture, all squares must be closed.

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We have moved two matchsticks in the picture and colored them red so you can understand what happened. Thus we have five 1x1 square, one 2x2 square and one 3x3 square.

#490 - Mythological Riddle

Your mythological knowledge might be pretty good. But can you tell the place where Lord Ram celebrated Diwali?

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You might be thinking between, Ayodhya, Lanka and Mitila etc but you are looking in the wrong direction. As per the logics, Diwali was celebrated as a mark of Lord Krishna killing the demon Narakasura.

If you know the Dasavatar, you must be knowing that Lord Krishna was the eighth avatar and Lord Ram was the seventh avatar. Therefore Lord Rama was born before Lord Krishna and could not have celebrate Diwali.