3 x17 is 51
51 is not a Prime number it is composite.
use this rule :
You wil know a number is divisible by 3 if you add up the digits. if the sum is a multiple of 3 then that number is divisible by 3.
i.e.: 51 5+1 =6
6 is divisible by 3 so 51 is divisible by 3.
51/3= 17
9/17 ÷ 3/34 = 9/17 x 34/3 = (9 x 34)/(3 x 17) = 9/3 x 34/17 = 3 x 2 = 6
2 x 3 x 3 x 3 x 17
x+3 = 20 x = 20-3 x = 17
x/3 + 12 = 29 x/3 = 29-12 = 17 x = 17 times 3 = 51
A n sided figure has 1/2 n(n - 3) diagonals → a 17-gon has 1/2 x 17 x (17 - 3) = 1/2 x 17 x 14 = 119 diagonals
The factors of 2601 are: 1, 3, 9, 17, 51, 153, 289, 867, 2601 Prime factors: 3, 3, 17, 17 Others are combinations: 3 x 3 = 9 3 x 17 = 51 17 x 17 = 289 3 x 3 x 17 = 153 3 x 17 x 17 = 867
2 x 3 x 3 x 17
17 3 x 3 x 7 = 63 5 x 17 = 85 3 x 3 x 5 x 7 x 17 = 5355, the LCM
9/17 ÷ 3/34 = 9/17 x 34/3 = (9 x 34)/(3 x 17) = 9/3 x 34/17 = 3 x 2 = 6
14/3 x 17/7 = 238/21 = 34/3 = 11 and 1/3 (14 + 3) x (17 - 7) = 17 x 10 = 170
33= 3 x 1151= 3 x 1733/51 = (3 x 11)/(3 x 17)= (3 x 11)/(3 x 17)= 11/17
51 = 1 x 3 x 17; 221 = 1 x 13 x 17. GCF is 1 x 17 = 17.
153 = 3 x 3 x 17
2*2*3*17= 204
17^3 = 4,913It is like doing 17 x 17 x 17 = 4,913
3 x 3 x 5 2 x 2 x 3 x 3 1 x 41 1 x 17 LCM is therefore 3 x 3 x 5 x 2 x 2 x 41 x 17 ie 125460
3% of 17 = 3/100 x 17 = 0.51