is_odd function returns true if the number passed is odd, false otherwise.

The arithmetic calculator is able to determine the **parity of an integer**, ie, to
check if a number is even
or
**odd**.

An **integer is odd** if it is not a multiple of 2. If an integer is not odd, then, it is
even
.

The arithmetic calculator is able to verify that a number is odd. If the number is odd, the function returns 1, otherwise it returns 0.

For example, to check that the number 11 is odd or even 0, enter the following formula is_odd(`11`), the calculator returns 1, indicating that 11 is an odd number.

For example, to check that the number 0 is odd or even 0, enter the following formula is_odd(`0`), the calculator returns 0, indicating that 0 is not an odd number.

The arithmetic calculator is able to verify that a number is even. Through function is_odd. If the number is even, the calculator returns 0, indicating that the number is not odd, so it is even.

For example to check that the number 4 is even, enter the following formula is_odd(`4`), the calculator returns 0, indicating that the number is not odd, ie it is even.

The calculator has another function to check that a number is even .

is_odd(number), where number is a integer.

is_odd(`191`), returns 0, indicating that the number is odd.

See also

- Number of arrangement of a set calculator : arrangement. To calculate online the number of arrangement of p elements of a set of n elements.
- Calculation of binomial coefficients : binomial_coefficient. A binomial coefficient calculator that allows you to calculate a binomial coefficient from two integers.
- To count the number of combinations : combination. To calculate the number of k elements of part of a set of n elements.
- Base-n converter : base_converter. The calculator allows you to make decimal, binary, hexadecimal conversions, and more generally to any base n between 2 and 36.
- Prime factorization calculator : prime_factorization. The function prime_factorization is used to calculate online the decomposition of an integer into prime factors.
- Quotient and remainder calculator : euclidean_division. The calculator allows to find online the quotient and the remainder in the euclidean division of two polynomials or two integers.
- Parity of a number : is_odd. Is_odd function returns true if the number passed is odd, false otherwise.
- Parity of a number : is_even. Is_even function returns 1 if the number is even, 0 otherwise.
- Factorial calculator : factorial. The factorial of a natural number n is the product of the positive integers less than or equal to n. The factorial calculator allows you to find this number.
- Integer calculations : integer_functions. This calculator allows you to apply special functions to an integer: prime_factorization, base_converter, factorial, percentage, permutation, perimeter, is_even, is_odd.
- Permutation calculator : permutation. To calculate online the number of permutation of a set of n elements.
- Gcd calculation online : gcd. GCD calculator that uses Euclid's algorithm to give the steps of the GCD calculation.
- Least common multiple : lcm. LCM calculator to calculate the least common multiple (LCM).
- Pythagorean theorem calculator : pythagorean. The calculator uses the Pythagorean theorem to verify that a triangle is right-angled or to find the length of one side of a right-angled triangle.
- Countdown solver : arithmetic_solver. This countdown solver allows finding a target number from a set of integer in using arithmetic operations.