alleryIn binary, when is a whole number odd?
AWhen its last digit is 1
BWhen its last digit is 0
CWhen it has an even number of digits
DWhen its first digit is 1
Answer & Solution
Correct answer: A. When its last digit is 1
1. In binary only the digits 0 and 1 are used.
2. A number is odd if its last digit is 1 and even if it is 0.
3. The first digit is always 1 for such numbers, so it cannot decide parity.
_Source: Wikipedia, Parity (mathematics), lead section_
Keep practising Divisibility Rule
Browse all Divisibility Rule questions for CTET, or explore more Mathematics topics.
Related questions
The common divisors of two numbers are exactly the divisors of what?What is the highest number that divides both 48 and 180?Using the highest prime powers, what is the lcm of 48 and 180?Find gcd(17, 0), the greatest common divisor.Which of these pairs of numbers is coprime?Two numbers are coprime when their greatest common divisor equals what?The greatest common divisor of two numbers is the greatest positive integer that does whatThe sum of the proper divisors of a number is known by which name?