O S C Sequence

O, S, C, Y, S, B, T, D, ?

What is the next letter in the sequence?

E. Oh say can you see, by the dawn’s early light.

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Seen in the Water

I am seen in the water
If seen in the sky,
I am in the rainbow,
A jay’s feather,
And lapis lazuli.

Blue.

Posted in Riddles

Oh, Oh, Oh, No

What number do the three letters O, H and N represent in order to make this addition problem correct?

OH
OH
OH
OH +
-----
NO

O = 2
H = 3
N = 9

23
23
23
23 +
-----
92
Posted in Brain Teasers

Consecutive Christmas Caroling

My family sings Christmas carols at the hospital where my wife works.
We do this every year and since we started, have not missed a single year.
The next time we do this will be the 18th consecutive Christmas.
My 15 year old daughter has been every time.

How is this possible?

She was born in March 1999 so the first year she came was December 1999 (before her 1st birthday).
Her first time was when she was 0, second time when she was 1, third time when she was 2, etc…

Now that she is 15, she has been 16 times. Oh and of course she was also present in December 1998 in her mum’s belly, due to be born the next March.

So, a total of 17 times and next time will be the 18th.

Thanks to Michael for submitting this real-life brain teaser about his family.

Posted in Brain Teasers

Full Of Lines

I’m full of lines and my job is to lie, yet I’m revered by many. What am I?

An actor. They memorize lines and lie about who they are, yet well-known actors are mobbed by fans whenever they’re seen in public.

Posted in Riddles

Hello Father

A women and daughter walked into a restaurant. A man walked past and the women both said, “Hello, Father”. How is this possible?

The man was a priest.

Posted in Brain Teasers

Progressive Countdown

If you’re given a number, subtract 1, then 2 from the result, then 3 from that result and so on until you reach 0 or a negative number.

For example, if you’re given 15:

15 – 1 = 14
14 – 2 = 12
12 – 3 = 9
9 – 4 = 5
5 – 5 = 0

Which of these numbers will finish exactly at zero?

102 103 104 105 106

105

105 – 1 = 104
104 – 2 = 102
102 – 3 = 99
99 – 4 = 95
95 – 5 = 90
90 – 6 = 84
84 – 7 = 77
77 – 8 = 69
69 – 9 = 60
60 – 10 = 50
50 – 11 = 39
39 – 12 = 27
27 – 13 = 14
14 – 14 = 0

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Sits in the Corner

I sit in a corner and travel around the world. What am I?

A stamp.

This is nearly a duplicate of Lives in the Corner.

Posted in Riddles

First In Flower and In Rose

My first is in FLOWER and in ROSE
My second is in FORK and well as HOSE
My third is in CROCUS but not in GNOME
My fourth is in RAKE never in HOME
My fifth is in HOE and also in WEEDS
My sixth is in SHEARS though not in SEEDS
My seventh is in LADYBIRD not in CREATURE

What am I?

Rockery

Posted in Riddles

What Digit Does Each Letter Represent?

This is what you know:

1. Each letter represents a different digit from 1 to 9
2. The total of each row is 17.
3. (B × B) + B + F = A
4. C × F = EF (a 2-digit number, not their product)

A B C
D E F

What digit does each letter represent?

A = 7
B = 1
C = 9

D = 8
E = 4
F = 5

A + B + C = 17
D + E + F = 17
B2 + B + F = A
C × F = EF

To begin with, B has to be a 1 or 2 or else A wouldn’t be a single digit. Plug in B = 2, gives you 6 + F = A, meaning F and A can only be (1,7) or (3,9). To get 17, C would have to be 8 or 6, but those values don’t work for C × F = EF. So B must be 1.

2 + F = A means F and A can be (2,4), (3,5), (4,6), (5,7), (6,8) or (7,9). To get 17 on the top row, the only option that leaves C as a single digit is F = 5 and A = 7.

C × F = EF
9 × 5 = 45, so E = 4 and D = 8 to make the second row equal to 17.

Posted in Brain Teasers