Which of the following numbers are Prime numbers?
5, 12, 15, 27, 31, 33, 39, 43, 52, 54, 60, 65, 67, 79, 84, 99.
Given :
The given numbers are, 5, 12, 15, 27, 31, 33, 39, 43, 52, 54, 60, 65, 67, 79, 84, 99.
To find :
We have to find the prime numbers among the given numbers.
Solution :
Prime Numbers:
Numbers which have only two factors (are perfectly divisible by only two numbers) i.e. one and itself.
For example,
5 is a prime number as 5 has only two factors, 1 and 5.
Prime numbers among the given numbers are 5, 31, 43, 67 and 79.
Related Articles
- The marks scored by 40 students of class IX in mathematics are given below:$81, 55, 68, 79, 85, 43, 29, 68, 54, 73, 47, 35, 72, 64, 95, 44, 50, 77, 64, 35, 79, 52, 45, 54, 70, 83, 62, 64, 72, 92, 84, 76, 63, 43, 54, 38, 73, 68, 52, 54.$Prepare a frequency distribution with class size of 10 marks.
- The water bills (in rupees) of 32 houses in a certain street for the period 1.1.98 to 31.3.98 are given below:56, 43, 32, 38, 56, 24, 68, 85, 52, 47, 35, 58, 63, 74, 27, 84, 69, 35, 44, 75, 55, 30, 54, 65, 45, 67, 95, 72, 43, 65, 35, 59.Tabulate the data and present the data as a cumulative frequency table using 70-79 as one of the class intervals.
- Which of the following numbers are perfect squares ?11, 12, 16, 32, 36, 50, 64, 79, 81, 111, 121
- Which of the following numbers are co-prime? $( a).\ 18$ and $35$ $( b).\ 15$ and $37$.
- Which one of the following is not a prime number? A. 89 B. 79 C. 87 D. 67
- The numbers 13 and 31 are prime numbers. Both these numbers have same digits 1 and 3. Find such pairs of prime numbers upto 100 .
- Solve the following pairs of equations:\( 43 x+67 y=-24 \)\( 67 x+43 y=24 \)
- The prime numbers 13 and 31 are formed by the same numbers. Find such pairs of numbers up to 100.
- Find the HCF of the following numbers :(a) 18, 48(b) 30, 42 (c) 18, 60 (d) 27, 63(e) 36, 84 (f) 34, 102 (g) 70, 105, 175(h) 91, 112, 49 (i) 18, 54, 81 (j) 12, 45, 75
- Write the natural numbers from 2 to 12 . What fraction of them are prime numbers?
- What are prime numbers and co-prime numbers?
- Find the squares of the following numbers by visual method:(i) 52(ii) 95(iii) 505(iv) 702(v) 99.
- Which of the following numbers are cubes of rational numbers:(i) \( \frac{27}{64} \)(ii) \( \frac{125}{128} \)(iii) \( 0.001331 \)(iv) \( 0.04 \)
- Which of the following numbers are prime?(a) 23 (b) 51 (c) 37 (d) 26
- Which of the following numbers are squares of even numbers?121,225,256,324,1296,6561,5476,4489, 373758
Kickstart Your Career
Get certified by completing the course
Get Started
Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies