mscroggs
.co.uk
mscroggs
.co.uk
blog
puzzles
academic
talks
contact
subscribe
subscribe
Loading image...
Advent calendar 2023
3 December
All 2023 advent puzzles
~
More information
190 is the smallest multiple of 10 whose digits add up to 10.
What is the smallest multiple of 15 whose digits add up to 15?
Show answer
Hide answer
195
.
Tags:
numbers
,
digits
,
multiples
Archive
Show me a random puzzle
Most recent collections
Advent calendar 2023
Advent calendar 2022
Advent calendar 2021
Advent calendar 2020
List of all puzzles
Tags
square roots
bases
crossnumbers
median
cube numbers
triangle numbers
probability
doubling
pentagons
surds
digital clocks
lines
unit fractions
tiling
chalkdust crossnumber
palindromes
integers
colouring
multiples
clocks
people maths
rectangles
fractions
integration
number
triangles
floors
speed
perimeter
folding tube maps
the only crossnumber
graphs
digital products
christmas
irreducible numbers
ave
sum to infinity
time
geometric mean
functions
division
differentiation
even numbers
addition
planes
geometry
symmetry
spheres
pascal's triangle
logic
chocolate
perfect numbers
quadratics
square numbers
hexagons
prime numbers
money
ellipses
wordplay
sets
dominos
sums
parabolas
2d shapes
calculus
factors
area
arrows
digits
proportion
indices
sport
multiplication
advent
axes
consecutive numbers
volume
3d shapes
geometric means
partitions
books
angles
odd numbers
grids
dodecagons
products
tangents
albgebra
trigonometry
remainders
games
percentages
shape
quadrilaterals
mean
probabilty
regular shapes
sequences
matrices
algebra
consecutive integers
dates
dice
coins
numbers
cryptic clues
coordinates
crossnumber
decahedra
cryptic crossnumbers
circles
rugby
range
means
cards
averages
elections
crosswords
gerrymandering
polygons
tournaments
factorials
determinants
scales
complex numbers
taxicab geometry
expansions
balancing
chess
binary
star numbers
shapes
squares
cubics
polynomials
combinatorics
menace
routes
Archive
Show me a random puzzle
▼ show ▼
▲ hide ▲
Most recent collections
Advent calendar 2023
Advent calendar 2022
Advent calendar 2021
Advent calendar 2020
List of all puzzles
Tags
cryptic crossnumbers
binary
factors
tournaments
median
polygons
folding tube maps
perimeter
palindromes
averages
sets
geometric means
cards
polynomials
sums
area
circles
chocolate
regular shapes
dice
squares
numbers
integration
crosswords
geometry
indices
tiling
coordinates
axes
calculus
volume
gerrymandering
probabilty
products
cube numbers
cryptic clues
quadratics
shapes
grids
ellipses
shape
complex numbers
pentagons
graphs
proportion
christmas
albgebra
differentiation
crossnumbers
means
fractions
dodecagons
parabolas
hexagons
probability
quadrilaterals
chalkdust crossnumber
square roots
balancing
digital clocks
digital products
dates
bases
even numbers
addition
digits
triangles
surds
floors
dominos
chess
taxicab geometry
colouring
arrows
games
multiplication
range
percentages
symmetry
speed
star numbers
tangents
irreducible numbers
factorials
partitions
algebra
doubling
wordplay
cubics
coins
angles
geometric mean
division
square numbers
odd numbers
consecutive integers
trigonometry
combinatorics
3d shapes
logic
advent
elections
expansions
sequences
multiples
pascal's triangle
consecutive numbers
decahedra
2d shapes
functions
sum to infinity
people maths
prime numbers
books
rectangles
lines
determinants
ave
number
remainders
time
routes
clocks
integers
scales
rugby
unit fractions
money
crossnumber
triangle numbers
matrices
the only crossnumber
planes
spheres
sport
perfect numbers
menace
mean
© Matthew Scroggs 2012–2024