It's been a while since i've done this !!!!, but here's the answer for Q226
485kts
OAT ISA + 10deg
FL410
Mach #: ????
1st calculate the correct temp, ISA@ FL410 = Approx -56deg + 10 = 46deg
On wizz wheel put your MACH ARROW on -46deg
On the outer scale find 485, read off the inner scale, which gives you the answer D: 0.825
Will have a look at the other ones for you tom.
PS. E-mail me, as i may have something which will interest you
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