The sum of five consecutive integers is 235. Which of the five integers is prime?
Given:
Sum of 5 consecutive integers = 235
Formula Used:
A prime number has no factors other than 2 or itself
Solution:
Let the consecutive number be x, x+1,x+2,x+3x and x+4
Sum of the numbers is: x + x + 1 + x + 2 + x + 3 + x + 4 = 5x+ 10
5x +10 = 235
x = 45
Numbers are 45,46,47,48 and 49
Clearly, only 47 is the prime number
English
80 Questions
160 Marks
60 Mins English English20 Questions40 Marks12 Mins English English80 Questions160 Marks60 Mins EnglishThe number of prime numbers lying between 323 and 332 is:
The number of prime numbers having two digits in which the digits are also prime is
The number of prime numbers lying between 393 and 401, both included, is:
The number of prime numbers lying between 466 and 476, both included, is:
The number of prime numbers lying between 430 and 438, both included, is:
The number of prime numbers lying between 400 and 430 is:
Which one of the following numbers is NOT a prime number?
The number of pairs of twin primes between 1 and 100 are:
How many prime numbers are there that are less than 50?
Which of the following numbers is NOT a prime number?
Suggested Test Series
Suggested Test Series
