1 x 21
3 x 7
it is a maths
21 and 21 equal 42.
37
21 + 21 = 42.
fractions which are equal to 21 = 21/1, 42/2, 63/3,...
21%
21
3x7 = 21
21 cm is equal to 0.21 meters.
2 / 21 is equal to 0.0952380952380952380952380952381(0.095)
21 7
1 x 21 3 x 7 7 x 3 21 x 1