Question
Quantitative Aptitude Question on Number Systems
Find the odd number in the following series
757,761,769,773,783,787,797
A
757
B
773
C
783
D
797
Answer
783
Explanation
Solution
To find the odd number in the series 757, 761, 769, 773, 783, 787, 797, let's analyze the numbers for their properties, particularly focusing on whether they are prime numbers or composite numbers.
757: prime
761: prime
769: prime
773: prime
783: composite (divisible by 3)
787: prime
797: prime
In this series, all the numbers except 783 are prime.
The correct option is (C):783