The first 3 digit number divisible by 19 is 114 (= 19 x 6) The last 3 digit number divisible by 19 is 988 (= 19 x 52) That means that there are 52 - 6 + 1 = 47 three digit numbers that are divisible by 19.
57 = 3 x 19 so 57 is divisible by 1, 3, 19 and 57.
No. To check divisibility by 3 add the digits of the number together and if the sum is divisible by 3, then so is the original number. 36226 → 3 + 6 + 2 + 2 + 6 = 19 19 is not divisible by 3, so 36226 is not divisible by 3.
19. All even numbers except 2 are divisible by 2 and so not prime - that eliminates 16, 18, 20, 28, 36 to leave 19. 33. 33 is divisible by 3 since 3+3 = 6 which is divisible by 3, leaving just 19 which is prime.
The prime factors are 342 are 2, 3, 3, and 19. Thus the numbers 342 is divisible by are 1, 2, 3, 6, 9, 18, 19, 36, 38, 57, and 342.
If sum of digits of a number is divisible by 3 then the number is divisible by 3. Sum of digits = 1+3+4+5+6 = 19 and 19 is not divisible by 3. So 13456 is not divisible by 3.
The first 3 digit number divisible by 19 is 114 (= 19 x 6) The last 3 digit number divisible by 19 is 988 (= 19 x 52) That means that there are 52 - 6 + 1 = 47 three digit numbers that are divisible by 19.
57 = 3 x 19 so 57 is divisible by 1, 3, 19 and 57.
19 is divisible by no number it is a prime number with only two factors
No. To check divisibility by 3 add the digits of the number together and if the sum is divisible by 3, then so is the original number. 36226 → 3 + 6 + 2 + 2 + 6 = 19 19 is not divisible by 3, so 36226 is not divisible by 3.
If the digits add up to a multiple of three for example: 52039 5+2+0+3+9=19 19 is not divisible by 3 so 52039 is not divisible by 3 --------- 342 3+4+2=9 9 is divisible by 3 so 342 is divisible by 3
Yes, 57/3 = 19
Since 19 is a prime number, it is not divisible by 3 or 7.
1, 3, 19, 57.
19. All even numbers except 2 are divisible by 2 and so not prime - that eliminates 16, 18, 20, 28, 36 to leave 19. 33. 33 is divisible by 3 since 3+3 = 6 which is divisible by 3, leaving just 19 which is prime.
No, it is divisible by 3 & 19
No. it is composite. 57 is divisible by 3 and 19 :)