mscroggs
.co.uk
mscroggs
.co.uk
blog
puzzles
academic
talks
contact
subscribe
↓ ☰ ↓
subscribe
Loading image...
Advent calendar 2025
2 December
All 2025 advent puzzles
~
More information
Eve writes down the numbers from 1 to 10 (inclusive). In total she write down 11 digits.
Noel writes down the number from 1 to 100 (inclusive). How many digits does he write down?
Show answer
Hide answer
Noel writes down 9 one-digit numbers, 90 two-digit numbers and 1 three-digit number. In total, these include 1×9 + 2×90 + 3×1 =
192
digits.
Tags:
numbers
,
digits
Archive
Show me a random puzzle
Most recent collections
Advent calendar 2025
Advent calendar 2024
Advent calendar 2023
Advent calendar 2022
List of all puzzles
Tags
time
tournaments
sequences
digits
sets
perimeter
coordinates
spheres
tangents
ave
circles
addition
tiling
money
logic
prime factors
routes
xor
arrows
square roots
indices
chess
rectangles
matrices
volume
albgebra
graphs
functions
rugby
products
fractions
doubling
differentiation
factorials
crossnumbers
cubics
surds
grids
consecutive integers
consecutive numbers
medians
books
colouring
sum to infinity
wordplay
bases
triangles
taxicab geometry
multiplication
shape
hexagons
combinatorics
division
probabilty
cryptic clues
angles
unit fractions
numbers
parabolas
crosswords
cards
integration
polygons
quadrilaterals
geometric means
axes
dominos
planes
perfect numbers
means
multiples
elections
folding tube maps
expansions
3d shapes
coins
lines
square numbers
median
people maths
star numbers
algebra
neighbours
clocks
games
quadratics
symmetry
percentages
complex numbers
probability
digital clocks
partitions
even numbers
cryptic crossnumbers
menace
factors
number
ellipses
regular shapes
prime numbers
dates
odd numbers
speed
dice
proportion
powers
trigonometry
geometric mean
determinants
binary
sums
scales
range
triangle numbers
pentagons
floors
chocolate
pascal's triangle
gerrymandering
area
square grids
dodecagons
decahedra
multiplaction squares
shapes
palindromes
christmas
irreducible numbers
calculus
mean
averages
the only crossnumber
lists
2d shapes
sport
digital products
chalkdust crossnumber
polynomials
cube numbers
advent
squares
remainders
balancing
integers
geometry
Archive
Show me a random puzzle
▼ show ▼
▲ hide ▲
Most recent collections
Advent calendar 2025
Advent calendar 2024
Advent calendar 2023
Advent calendar 2022
List of all puzzles
Tags
factorials
square roots
balancing
matrices
sequences
angles
consecutive numbers
median
neighbours
means
prime factors
triangle numbers
rugby
powers
clocks
pascal's triangle
sums
folding tube maps
averages
the only crossnumber
shapes
geometric mean
bases
wordplay
perfect numbers
proportion
cubics
dominos
christmas
3d shapes
chess
chocolate
quadratics
square numbers
star numbers
determinants
doubling
probability
cards
grids
chalkdust crossnumber
lists
ave
sport
binary
symmetry
books
expansions
trigonometry
surds
probabilty
perimeter
games
integration
functions
elections
differentiation
menace
remainders
tournaments
sum to infinity
complex numbers
sets
albgebra
combinatorics
axes
xor
hexagons
ellipses
advent
polynomials
circles
multiples
speed
decahedra
scales
taxicab geometry
logic
medians
quadrilaterals
dodecagons
crosswords
calculus
tangents
algebra
lines
geometric means
palindromes
multiplication
odd numbers
mean
graphs
addition
area
crossnumbers
rectangles
consecutive integers
polygons
range
division
spheres
squares
number
fractions
gerrymandering
numbers
square grids
factors
even numbers
triangles
shape
digital products
coins
time
prime numbers
dates
digital clocks
percentages
cryptic clues
cube numbers
volume
partitions
people maths
planes
geometry
multiplaction squares
routes
pentagons
colouring
unit fractions
coordinates
products
floors
money
regular shapes
irreducible numbers
tiling
indices
cryptic crossnumbers
parabolas
integers
dice
2d shapes
arrows
digits
© Matthew Scroggs 2012–2026