Select the ten correct descriptions of the number 2025 and avoid the six incorrect options. The definitions of more obscure terms are given as follows:
An ALGEBRAIC number is a root of a non-zero polynomial equation with integer coefficients; a DEFICIENT number is a number where the sum of its proper divisors is less than the number itself; a FIBONACCI number is a number from the Fibonacci sequence (1, 1, 2, 3, 5, 8, ...), where the subsequent term is the sum of the two preceding terms; a HARSHAD number is divisible by the sum of its digits; a PERFECT number is a number that is equal to the sum of its proper divisors; a REGULAR number is a number whose only prime factors are 2, 3, and 5; a TRIANGULAR number (1, 3, 6, 10, ...) is derived from the counting of objects that are arranged in an equilateral triangle.
There are 10 correct entries. Get 3 incorrect and the game ends.
Prime
Perfect
Fibonacci
Palindromic
Regular
Deficient
Algebraic
Square
Composite
Odd
Cube
Triangular
Real
Natural
Rational
Harshad
Left click to select the correct answers.
Right click if using a keyboard to cross out things you know are incorrect to help you narrow things down.