Advertisements
Advertisements
Question
State if the following is a prime number?
277
Advertisements
Solution
A number between 100 and 200 is a prime number if it is not divisible by any prime number less than 15.
Similarly, a number between 200 and 300 is a prime number if it is not divisible by any prime number less than 20.
277 is a prime number because it is not divisible by 2, 3, 5, 7, 11, 13, 17, and 19.
APPEARS IN
RELATED QUESTIONS
Test the divisibility of the following number by 3:
872645
Test the divisibility of the following numbers by 5:
4965
Test the divisibility of the following numbers by 5:
124684
Test the divisibility of the following numbers by 9:
326999
Test the divisibility of the following number by 11:
137269
Give an example of a number which is divisible by 4 but not by 8.
Write (T) for true and (F) for false against the following statement:
The sum of two consecutive odd numbers is always divisible by 4.
Find the greatest number which divides 2011 and 2623, leaving remainders 9 and 5 respectively.
Find the greatest number that will divide 445, 572 and 699, leaving remainders 4, 5, 6 respectively.
Three bells toll together at intervals of 9, 12, 15 minutes. If they start tolling together, after what time will they next toll together?
