If there is no common factor (other than 1) among the numbers, the numbers are called “co-primes”. Which of the following is NOT true about co-primes?
A. The highest common factor of co-primes is 1.
B. 16, 27, 25 form a set of co-primes.
C. Two or more numbers that have 3 or more factors, can form a set of co-primes.
D. Any two consecutive numbers will always be co-prime.
E. A set of primes (numbers with exactly 2 factors) is not a set of co-primes.
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Sanjeev K Saxena
Quantitative Instructor
The Princeton Review - Manya Abroad
Lucknow-226001
www.manyagroup.com
