Each part equals -19. 0-19=-19, 4-23=-19,...so 25-X=-19. This means 25+19=X, so the missing number is 25+19 which is 44.
17, 19, 23, 29, and 31
17, 19, 23, 29, and 31
22
7
19 and 23 are prime.
15 is composite number 17, 19 and 23 are prime numbers.
15 is. In addition to ' 1 ' and itself, it has the additional factors 3 and 5 .
17, 19, 23, 29, and 31
15 has more than exactly two factors (1, 3, 5, and 15), therefore it is composite. 17, 19, and 23 each have exactly 2 factors (1 and the number itself), so they are primes.
17, 19, 23, 29, and 31
22
7
l am prime number. and a between 3 and 15 and a am a time by 20.
The mean = The sum of all the values ÷ The number of values. 18 + 15 + 22 + 18 + 25 + 19 + 23 = 140 : Number of values = 7 Mean = 140 ÷ 7 = 20
23
19
13 x 23 x 19 x 15 = 85215