Question

D, mdc(24, 28)=?
E,mdc(6, 8, 10)=?
F,mdc(7, 14 , 21)=?
G,mdc(20, 48)=?
H,mdc(8, 15)=?
I,mdc(40, 25)=?

Answer 1

mdc (24, 28) =
D (24) = {1, 2, 3, 4, 6, 8, 12, 24}
D (28) = {1, 2, 4, 7, 14, 28}
D (24) ∩ D (28) = {1, 2, 4}
mdc (24, 28) = 4

mdc (6, 8, 10) =
D (6) = {1, 2, 3, 6}
D (8) = {1, 2, 4, 8}
D (10) = {1, 2, 5, 10}
D (6) ∩ D (8) ∩ D (10) = {1, 2}
mdc (6, 8, 10) = 2

mdc (7, 14 , 21) =
D (7) = {1, 7}
D (14) = {1, 2, 7, 14}
D (21) = {1, 3, 7, 21}
D (7) ∩ D (14) ∩ D (21) = {1, 7}
mdc (7, 14, 21) = 7

mdc (20, 48) =
D (20) = {1, 2, 5, 10, 20}
D (48) = {1, 2, 3, 4, 6, 8, 12, 16, 24, 48}
D (20) ∩ D (48) = {1, 2}
ndc (20, 48) = 2

mdc (8, 15) =
D (8) = {1, 2, 4, 8}
D (15) = {1, 3, 5, 15}
D (8) ∩ D (15) = {1}
mdc (8, 15) = 1

mdc (40, 25) =
D (40) = {1, 2, 4, 5, 8, 10, 20, 40}
D (25) = {1, 5, 25)
D (40) ∩ D (25) = {1, 5}
mdc (40, 25) = 5