LiLBoBo said:

you way seems so shifty though,LOL (im just in denial because i got it wrong)

quoting from elsewhere...

Question 4 b)
50 x 1.2 = 60 (first application)

60 x 1.2 = 72 (second application)

72 x 1.2 = 86.4 (third)

86.4 x 1.2 = 103.68 (fourth)

103.68 x 1.2 = 124.416 (fifth)

124.416 x 1.2 = 149.2992 (sixth)

149.2992 x 1.2 = 179.159 (seventh)

179.159 x 1.2 = 214.49 (eighth)

continuing on...

214.49 x 1.2 = 257 (ninth)

257 x 1.2 = 308.86 (tenth)

308 x 1.2 = 370 (eleventh)

370 x 1.2 = 444 (twelfth)

that's what i did. i actually couldn't remember the formulas!

Wingom said:

for iii. i got 4/9.. and from your working out.. it should be..

1 - p (gg) - p (xx) = 1 - 1/9 - 4-9 = 4/9

ack, of course. my bad. thanks! stupid brain *mutter mutter*