GMAT Quant guide: 8. Divisibility, factors and integers

[@sediye]

thanks❤

[@Gravitas___]

Can you help explain why in the last section, the chance n+1 | 8 when n is odd is 1/2 * 1/4 = 1/8? What is the general rule to calculate the chances for an even number divisible by x, and for an odd number divisible by x? when x is odd and when x is even? Thanks.