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Logic Puzzles

DarkWolf May 28th, 2019

This topic will be exclusively for logic puzzles!

Do you prefer riddles? (click here to go to the riddle topic)

Let's start with a logic puzzle! Which square fits in the last grid?

1360
DarkWolf OP May 12th, 2023

What number should replace the question mark?

4e09aea9-685e-4ebc-9442-5ba99cf0cf7b-image_1683897578.png

3 replies
Barltik2065 May 12th, 2023

@DarkWolf

Theory is adding to line above = the line below

9 (9+0 = 9)
7+2 =9 (9+9 = 18)
5+7+6 = 18 (18 +7+2 = 27)
4+6+9+8 = 27




? = 9

1 reply
DarkWolf OP May 13th, 2023

@Barltik2065

It's a very interesting solution that does seem to technically work too. πŸ‘It wasn't the intended answer though.

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cloudySummer May 13th, 2023

@DarkWolf 0 (everything * 8, going down)

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lazyKatz May 12th, 2023

0 I think

1 reply
DarkWolf OP May 13th, 2023

@lazyKatz @cloudySummer

Yes, it's 0. πŸ‘ And cloudysummer had the right explanation, you just multiply each line by 8 to get the next one.

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DarkWolf OP May 13th, 2023

Select the figure which satisfies the same conditions of placement of the dots as in Figure-X.

26_1683972535.png

2 replies
cloudySummer May 13th, 2023

@DarkWolf I'd say 1 - dots are in following overlaps:

  1. triangle with rectangle only
  2. rectangle with square only
  3. all shapes at once

This seems only possible in figure 1.

Figure 2 doesn't satisfy condition 1, Figure 3 same, Figure 4 cannot satisfy conditions 2 & 3.

1 reply
DarkWolf OP May 13th, 2023

@cloudySummer

Yes, figure 1 is correct. πŸ‘ Well done.

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lazyKatz May 13th, 2023

The bottom dot doesn't appear to suit 1 and 4, whilst the top dot doesn't appear to suit 3.

Therefore I think the answer is 2.

1 reply
DarkWolf OP May 13th, 2023

@lazyKatz

The correct answer is actually 1. This is the full explanation of why that's the case:

In fig. (X), one of the dots lies in the region common to the square and the rectangle only, another dot lies in the region common to all the four elements - the circle, the square, the triangle and the rectangle and the third dot lies in the region common to the triangle and the rectangle only. In fig. (2) there is no region common to the triangle and the rectangle only. In fig. (3) there is no region common to the square and the rectangle only. In fig. (4) there is no region common to all the four elements - the circle, the square, the triangle and the rectangle. Only fig. (1) consists of all the three types of regions.

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DarkWolf OP May 15th, 2023

What is the answer to the last equation?

fascinating-fruits_1684116051.png

11 replies
May 15th, 2023

@DarkWolf 14

Barltik2065 May 15th, 2023

@DarkWolf

Apple = 2
Banana = 2
Cherry = 3

Line 1: 2 + 2 = 4
Line 2: 2 + (2 + 2) = 6
Line 3: 2 + (3+ 3) = 8
Line 4: 2 + 2 + (3+ 3 + 3) = 13

4 replies
DarkWolf OP May 15th, 2023

@Barltik2065

You found the right number for each fruit, but I think you missed the multiplication sign in the last line.

3 replies
Barltik2065 May 15th, 2023

Oh I did LOL


Reading is so over rated hehe


36 ;)

2 replies
DarkWolf OP May 15th, 2023

@Barltik2065

Multiplication also comes before addition, so

2 + 2 x (3 + 3 + 3) =

2 + 2 x 9 =

2 + 18 = 20

Definitely tricky.

1 reply
Barltik2065 May 15th, 2023

@DarkWolf

Ok... I am showing my age here ... wow

Went through foil method :(

LOL

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May 15th, 2023

@DarkWolf oh no, this was tricky one. Got the answer wrong twice. smh hehe

Good puzzle

1 reply
DarkWolf OP May 15th, 2023

@DonaldDraper

It was definitely a tricky one, I'll post the answer down below. πŸ’‘

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VaryingCloud May 15th, 2023

@DarkWolf

20 🀞

2 replies
VaryingCloud May 15th, 2023

Apple = 2

Banana = 2/bunch

cherry = 3 each

A + (Banana * 3 cherries) = 2 + (2*9) = 20

1 reply
DarkWolf OP May 15th, 2023

@VaryingCloud

Yes, that's it πŸ‘Well done!

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lazyKatz May 15th, 2023

24

lazyKatz May 15th, 2023

Is 36 a better try

2 replies
DarkWolf OP May 15th, 2023

@lazyKatz

The actual answer was 20 πŸ’‘

1 reply
DarkWolf OP May 15th, 2023

@DarkWolf

I think you got to 36 for the same reason, If you first add 2 + 2 and multiply it by 9 after, you get to 36. But there's a rule in math that you have to multiply before you add.

2 + 2 x 9 =

2 + 18 = 20

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DarkWolf OP May 15th, 2023

Frank and Susan have six children: Donald, Rebecca, Michael, Faye, Solomon, and Lara. Susan is pregnant with her seventh child, a girl. Frank and Susan have chosen a name for her that fits with the other names.

The question: what will the name of the seventh child be: Jessica, Karen, Abby or Tilly?

7 replies
VaryingCloud May 15th, 2023

@DarkWolf

Tilly!!!!!!! Didn’t know I had to sing for the answer lol

Nice one indeed

1 reply
VaryingCloud May 15th, 2023

And I’m sure even Frank and Susan wouldn’t have thought that much xD

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cloudySummer May 15th, 2023

@DarkWolf Tilly! (not yet an octave, though)

May 16th, 2023

@DarkWolf TillyDraper and the next one would be Donald2Draper if a guy and DoraDraper if a girl

1 reply
VaryingCloud May 19th, 2023

@DonaldDraper πŸ˜‚

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Barltik2065 May 17th, 2023

@DarkWolf

Tilly
Off the music scales

1. Do - Donald
2. Re - Rebecca
3. Mi - Michael
4. Fa - Faye
5. Sol - Solomon
6. La - Lara
7. Ti – Tilly ****
8. Do - DoraTheExplora

1 reply
DarkWolf OP May 17th, 2023

@Barltik2065 @VaryingCloud @cloudySummer @DonaldDraper


You all got the right answer, well done πŸ’‘
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DarkWolf OP May 17th, 2023

What is the next number in the sequence?

2 9 3 1 8 4 3 6 5 7 ?



5 replies
Barltik2065 May 18th, 2023

@DarkWolf

Seriously good one


1 reply
DarkWolf OP May 18th, 2023

@Barltik2065

It's definitely a difficult one.

Hint: spaces have been added between some 2-digit numbers to make it harder to solve.

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cloudySummer May 18th, 2023

@DarkWolf 2 (thanks to the 'some' in your hint)

2 replies
DarkWolf OP May 18th, 2023

@cloudySummer

Yes, very well done! πŸ‘

Once the puzzle is rewritten it becomes more obvious what the answer is. There's one pattern that counts up by 1 each time, while the other one keeps doubling.

2-9-3-18-4-36-5-7?


1 reply
Barltik2065 May 19th, 2023

@DarkWolf

WOW.

Totally missed that one ...

hehehehe

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May 18th, 2023

@DarkWolf my sis said the answer is D. It's the only one with 9 dots. πŸ˜„πŸΆ

1 reply
DarkWolf OP May 18th, 2023

@richuyulin

That's the right answer for the post all the way at the top πŸ‘ Well done by your sis. πŸ’‘

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