volidx random_index R_100 digits matchesdiffers both 60 FALSE TRUE LTE 0.5 t USD 5 1 0 t USD 5 1 1 GTE 0.5 t USD 5 1 0 t USD 5 1 1 LTE 0.5 t USD 5 1 2 t USD 5 1 3 GTE 0.5 t USD 5 1 2 t USD 5 1 3 DIGITMATCH