Question

picture attached plz help..... i have the answer but i need the explanation

the figure above shows the remaining pieces of a paper chain from which a section has been removed. the first link of the original chain was red and the colors of the links formed the repeating pattern of R (red), Y (yellow), G (green), W (white),B (blue) left to right. which of the following could be the number of links in the section that was removed?
A)60
B)61
C)62
D)63
E)64

Answer 1

the answer is D but i dont know why

Answer 2

ohkey.. so you have a color pattern of 5 different color, which r repeating..

SO from the option, take a multiple of 5 i.e 60

Now chain is breaking at Green, so color after that White and Blue i.e = 2
and chain`s third section starts from, Yellow.. so color before that to complete the pattern Red , i.e only one..

so 60 +2 +1 = 63..

This is how i can figure out... there might be another approach...

Answer 3

its simply a case of setting and equation

there 5 links between colours... and the chain ends at green and restarts a link early at yellow


this is 5L - 1



the only number that fits the need is 64

5L - 1 = 64

add 1 to both sides

5L = 65

so L = 15

so there are 15 sets of links