Teaching REET Mock Test Series 2024-25 Level 1 & 2 (Hindi-Sanskrit-English) Quantitative Aptitude Number System Prime Numbers
Let a and b be two numbers such that a and b - a are co - primes and b and b + a are co - primes, respectively. Which of the followings is true?
1
a and b are not co - prime
2
b is prime
3
a is prime
4
a and b are co - prime
5
Question Not Attempted