explore | Grilled Cheese

@littleredmath.bsky.social Oct 16, 2026, 3:00 AM

🧠 Today's puzzle — Math Kangaroo Benjamin 2019 Problem 19

Hint, solution + answer at the link 👇
https://littleredmath.com/kangaroo/problems/kangaroo-2019-benjamin-19

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath

Robert makes 5 statements, exactly one of which is wrong: (A) My son Basil has 3 sisters. (B) My daughter Ann has 2 brothers. (C) My daughter Ann has 2 sisters. (D) My son Basil has 2 brothers. (E) I have 5 children. Which statement is wrong?

@littleredmath.bsky.social Oct 15, 2026, 3:00 AM

🧠 Today's puzzle — AMC 8 2015 Problem 11

Hint, solution + answer at the link 👇
https://littleredmath.com/amc8/problems/amc8-2015-11

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath

In the small country of Mathland, all automobile license plates have four symbols. The first must be a vowel (A, E, I, O, or U), the second and third must be two different letters among the 21 non-vowels, and the fourth must be a digit (0 through 9). If the symbols are chosen at random subject to these conditions, what is the probability that the plate will read "AMC8"?

@littleredmath.bsky.social Oct 14, 2026, 3:00 AM

🧠 Today's puzzle — Math Kangaroo Junior 2016 Problem 3

Hint, solution + answer at the link 👇
https://littleredmath.com/kangaroo/problems/kangaroo-2016-junior-03

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath

Ruth takes part in the kangaroo competition where 30 questions have to be answered. She answers every question and each answer is either right or wrong. She has 50% more right than wrong answers. How many of her answers are right?

@littleredmath.bsky.social Oct 13, 2026, 3:00 AM

🧠 Today's puzzle — AJHSME 1993 Problem 1

Hint, solution + answer at the link 👇
https://littleredmath.com/amc8/problems/ajhsme-1993-01

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath

Which pair of numbers does NOT have a product equal to 36?

@littleredmath.bsky.social Oct 12, 2026, 3:00 AM

🧠 Today's puzzle — Math Kangaroo Kadett 2013 Problem 28

Hint, solution + answer at the link 👇
https://littleredmath.com/kangaroo/problems/kangaroo-2013-kadett-28

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath

Dad made 6 pancakes one after another and numbered them 1 to 6 in the order he made them. Sometimes while he worked his children ran into the kitchen and ate the hottest pancakes. In which of the following orders could the pancakes not have been eaten?

@littleredmath.bsky.social Oct 11, 2026, 3:00 AM

🧠 Today's puzzle — AJHSME 1990 Problem 12

Hint, solution + answer at the link 👇
https://littleredmath.com/amc8/problems/ajhsme-1990-12

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath

There are twenty-four 4-digit numbers that use each of the four digits 2, 4, 5, and 7 exactly once. Listed in numerical order from smallest to largest, the number in the 17th position in the list is

@littleredmath.bsky.social Oct 10, 2026, 3:00 AM

🧠 Today's puzzle — Math Kangaroo Benjamin 2010 Problem 4

Hint, solution + answer at the link 👇
https://littleredmath.com/kangaroo/problems/kangaroo-2010-benjamin-04

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath

A staircase has 21 steps. Nick and Mike count the steps, one from bottom to top and the other from top to bottom. They meet at one step, which Nick counts as the 10th. Which number does Mike give this same step?

@littleredmath.bsky.social Oct 9, 2026, 3:00 AM

🧠 Today's puzzle — AJHSME 1987 Problem 20

Hint, solution + answer at the link 👇
https://littleredmath.com/amc8/problems/ajhsme-1987-20

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath

"If a whole number n is not prime, then the whole number n − 2 is not prime." A value of n which shows this statement to be false is

@littleredmath.bsky.social Oct 8, 2026, 3:00 AM

🧠 Today's puzzle — Math Kangaroo Ecolier 2010 Problem 4

Hint, solution + answer at the link 👇
https://littleredmath.com/kangaroo/problems/kangaroo-2010-ecolier-04

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath

In a cafe the soup costs €4, the main course €9 and the dessert €5. The three courses ordered together cost €15. How many euros cheaper is this than ordering the same three courses separately?

@littleredmath.bsky.social Oct 7, 2026, 3:00 AM

🧠 Today's puzzle — AJHSME 1988 Problem 13

Hint, solution + answer at the link 👇
https://littleredmath.com/amc8/problems/ajhsme-1988-13

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath

If rose bushes are spaced about 1 foot apart, approximately how many bushes are needed to surround a circular patio whose radius is 12 feet?

@littleredmath.bsky.social Oct 6, 2026, 3:00 AM

🧠 Today's puzzle — Math Kangaroo Junior 2013 Problem 29

Hint, solution + answer at the link 👇
https://littleredmath.com/kangaroo/problems/kangaroo-2013-junior-29

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath

100 trees (oaks and birches) are standing in a row. The number of trees between any two oaks is never equal to 5. What is the maximum number of the 100 trees that can be oaks?

@littleredmath.bsky.social Oct 5, 2026, 3:00 AM

🧠 Today's puzzle — AJHSME 1993 Problem 15

Hint, solution + answer at the link 👇
https://littleredmath.com/amc8/problems/ajhsme-1993-15

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath

The arithmetic mean (average) of four numbers is 85. If the largest of these numbers is 97, then the mean of the remaining three numbers is

@littleredmath.bsky.social Oct 4, 2026, 3:00 AM

🧠 Today's puzzle — Math Kangaroo Kadett 2010 Problem 28

Hint, solution + answer at the link 👇
https://littleredmath.com/kangaroo/problems/kangaroo-2010-kadett-28

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath

A kangaroo who is interested in geometry has a collection of 1×1×1 dice. Each die has a certain colour. It wants to make a 3×3×3 cube out of the dice so that any small dice that touch — even just at a single corner — always have different colours. What is the smallest number of colours it needs?

@littleredmath.bsky.social Oct 3, 2026, 3:00 AM

🧠 Today's puzzle — AJHSME 1991 Problem 17

Hint, solution + answer at the link 👇
https://littleredmath.com/amc8/problems/ajhsme-1991-17

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath

An auditorium with 20 rows of seats has 10 seats in the first row. Each successive row has one more seat than the previous row. If students taking an exam are permitted to sit in any row, but not next to another student in that row, then the maximum number of students that can be seated for an exam is

@littleredmath.bsky.social Oct 2, 2026, 3:00 AM

🧠 Today's puzzle — Math Kangaroo Benjamin 2016 Problem 20

Hint, solution + answer at the link 👇
https://littleredmath.com/kangaroo/problems/kangaroo-2016-benjamin-20

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath

Luigi owns a few square tables and some chairs for his little restaurant. If he sets out his tables individually with 4 chairs each, he is 6 chairs short. If he always puts two tables together to make a bigger table with 6 chairs, he has 4 chairs left over. How many tables does Luigi have?

@littleredmath.bsky.social Oct 1, 2026, 3:00 AM

🧠 Today's puzzle — AMC 8 2007 Problem 3

Hint, solution + answer at the link 👇
https://littleredmath.com/amc8/problems/amc8-2007-03

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath

What is the sum of the two smallest prime factors of 250?

@littleredmath.bsky.social Sep 30, 2026, 3:00 AM

🧠 Today's puzzle — Math Kangaroo Felix 2019 Problem 13

Hint, solution + answer at the link 👇
https://littleredmath.com/kangaroo/problems/kangaroo-2019-felix-13

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath

Together the three squirrels Anni, Asia and Elli have 10 nuts. Each one has a different number of nuts, but at least 2 nuts. Anni has the least number of nuts. Asia has the most nuts. How many nuts does Elli have?

@littleredmath.bsky.social Sep 29, 2026, 3:00 AM

🧠 Today's puzzle — AMC 8 2010 Problem 7

Hint, solution + answer at the link 👇
https://littleredmath.com/amc8/problems/amc8-2010-07

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath

Using only pennies, nickels, dimes, and quarters, what is the smallest number of coins Freddie would need so he could pay any amount of money less than a dollar?

@littleredmath.bsky.social Sep 28, 2026, 3:00 AM

🧠 Today's puzzle — Math Kangaroo Kadett 2009 Problem 7

Hint, solution + answer at the link 👇
https://littleredmath.com/kangaroo/problems/kangaroo-2009-kadett-07

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath

In a park there are some cats and dogs. The number of cats’ feet is double the number of dogs’ noses. The number of cats is … ? … the number of dogs.

@littleredmath.bsky.social Sep 27, 2026, 3:00 AM

🧠 Today's puzzle — AMC 8 2019 Problem 18

Hint, solution + answer at the link 👇
https://littleredmath.com/amc8/problems/amc8-2019-18

#MathPuzzle #AMC8 #MathKangaroo #SingaporeMath

The faces of each of two fair dice are numbered 1, 2, 3, 5, 7, and 8. When the two dice are tossed, what is the probability that their sum will be an even number?