Find the odd number in the following series
757,761,769,773,783,787,797
757
773
783
797
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
Directions: In Question Numbers 19 and 20, a statement of Assertion (A) is followed by a statement of Reason (R).
Choose the correct option from the following:
(A) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
(B) Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A).
(C) Assertion (A) is true, but Reason (R) is false.
(D) Assertion (A) is false, but Reason (R) is true.
Assertion (A): For any two prime numbers $p$ and $q$, their HCF is 1 and LCM is $p + q$.
Reason (R): For any two natural numbers, HCF × LCM = product of numbers.