Advertisements
Advertisements
Question
State if the following is a prime number?
161
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.
161 is a not prime number because it is divisible by 7.
APPEARS IN
RELATED QUESTIONS
Test the divisibility of the following number by 4:
946126
Test the divisibility of the following numbers by 5:
723405
Test the divisibility of the following numbers by 5:
438750
Test the divisibility of the following number by 11:
83721
In the following number, replace * by the smallest number to make it divisible by 9:
91*67
Write (T) for true and (F) for false against the following statement:
A number is divisible by 18 if it is divisible by both 3 and 6.
Three bells toll together at intervals of 9, 12, 15 minutes. If they start tolling together, after what time will they next toll together?
What least number should be replaced for * so that the number 67301*2 is exactly divisible by 9?
Which of the following statements is TRUE about divisibility rules?
If a number is divisible by 6, which of the following must be true?
