Patterns, Sequences, and Sets

Difficulty - Easy, Patterns, Sequences, and Sets, Word Puzzles

Something in Common

These words all have an unusual property in common, what is it?

Adopt
Glory
Knot
Empty
Hint
Begin

Difficulty - Easy, Patterns, Sequences, and Sets, Word Puzzles

Almost Special Words

What is a special property or feature that all of the following words have in common?

banana, uneven, grammar, voodoo, assess, potato, revive, dresser

Difficulty - Medium, Patterns, Sequences, and Sets

Nob’s Number Tree Puzzle

Nob’s Number Tree

What number belongs in the “?” circle? Note that all numbers shown are correct, there are no typos or errors.

Nob Yoshigahara’s Puzzles

Nob’s Number Tree is a well-known brainteaser by the Japanese puzzle guru Nobuyuki “Nob” Yoshigahara, who wrote many mathematical puzzle books and invented many puzzle toys. This cheeky number tree puzzle seems straightforward, but the straightforward solution falls apart when you arrive at the bottom.

Difficulty - Hard, Patterns, Sequences, and Sets

Sequence Puzzle

Find the next two terms in this sequence:

10, 11, 12, 13, 14, 15, 16, 17, 21, 23, 30, 33, ?, ?

Difficulty - Hard, Patterns, Sequences, and Sets, Word Puzzles

Cryptic Pattern Puzzle

Replace the ?’s in each of these to complete the puzzle:

Part 1

“Asia” is H
“Cuffs” is S
“Ender” is I
“Redness” is F
“Fuchsia” is ?

Part 2

“Using” is E
“Desist” is I
“Visits” is E
“Design” is ?

Part 3

“Gross” is W or R
“Assign” is S
“Amassing” is E
“Design” is S
“Amassing” is S
“Arrows” is ? or ?

Part 4

“Pro-tem” and “row” are H
“Ties” is K
“Cohesion” is A
“Casino” is E
“Hocks” is either a word, name, ? or ?

Part 5

“Edna” is I
“Slang” is X
“Siege” is E
“Basin” is X
“Sin” is X
“Sin” is A
“Besiege” is X
“Signals” is ? and ?

Source: Matt Malone on Puzzling StackExchange (spoiler warning: contains the solution)