/r/askmath/

r/askmath

239k members
r/askmath is a subreddit with 239k members. The community frequently discusses math, struggling, algebra, geometry, and looking for, and they frequently recommend/review textbooks, statistics book, and website recommendations, and the most common flair used is geometry, algebra, calculus, arithmetic, and probability.
This subreddit is for questions of a mathematical nature. Please read the subreddit rules below before posting.

Popular Topics in r/askmath

#1

Math

129 posts
#2

Struggling

85 posts
#3

Algebra

33 posts
#4

Geometry

30 posts
#5

Looking For

28 posts
#6

Help

27 posts
#7

Calculus

25 posts
#8

Probability

21 posts
#9

Integral

17 posts
#10

Question

14 posts

Products Discussed in r/askmath

Textbooks

2 reviews
#1
Karlin and Taylor
3.0 from 1 review
#2
Gut
4.0 from 1 review
#1
Freedman, Pisani, and Purves
4.0 from 1 review
#1
Wolfram Alpha
4.0 from 1 review

Flair Used in r/askmath

#1
Geometry
: "Found on Facebook. not enough info?"
32 posts
#2
Algebra
: "√x = -√x. Find x."
28 posts
#3
Calculus
: "Why use radian in calculus?"
25 posts
#4
Arithmetic
: "Round to the nearest Integer"
17 posts
#5
Probability
: "How probabilisticly rare is this ?"
14 posts
#6
Functions
: "How does one solve this?"
13 posts
#7
Number Theory
: "what actually is "i"?"
11 posts
#8
Logic
: "Which base actually makes the much sense?"
9 posts
#9
Analysis
: "Weierstrass nowhere differentiable proof from OCW 18.100A"
7 posts
#10
Discrete Math
: "What is the correct answer to this question?"
6 posts

Member Growth in r/askmath

Yearly
+39k members(19.8%)

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About

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Last updated: July 1, 2026