math
rainbow colors
100

what is 2x20

40

100

what is the second color in the rainbow

blue

200

what is 4x12

48

200

how many colors in the rainbow

7

300

what is 6x7

42

300

can there be a duoble rainbow

yes there can

400

what is 11x12

132

400

what is my fav color in the rainbow 

purple

500

what is 13x12

156

500

what is at the end of a rainbow 

nothing is at the end of the rainbow