First turn the bottom dial to an upside down "A" letter. Then the 4 panels on the side will open up. You are asked to solve the equations to use the telescope

1st Formula=D/B=A,

2nd, A+b=5

3rd, CXB=0

4th, 0<E<2

5th, B-E=A

**Solution SPOILERS ALERT (DO NOT READ further unless u need to know the solution): **

__"A" Dial__

A=2, so take a look at the various dials and find a dial label "A", this is on the LHS of the scope, turn this dial to 2,

__"B" dial__

Since A+B=5, thus, B=3 (similarly, turn dial B=3)

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"E" dial

B-E=A, thus, E=1

If E<2, then E must be either 1 or 0, we solve this as 1, coz B=3. Also there is NO zero on E dial, thus E=1, in addition, 0<E<2 thus, E must be greater than 0 and smaller than 2, only 1 is greater than 0, and yet smaller than 2!

__"C" dial__

C*B=o, then since B=3, then C=0, I think u must turn the C dial to 1 and -1, you cant set zero coz there is no zero on C, but when I turn this C dial, it always light up 2 digits, thus, its either 1, 0, or -1, 0, or 1, -1. Thus turn press till u see 1, -1 for this dial.

__"D" dial__

Since D/B=A, and B=3, A=2, thus, D=6

LOGIC:

1) There is no ZERO dial on B, thus B is not possible to be zero, if u try the combination:

A+B=5:

1) 1+4=5

2) 2+3=5

3) 3+2=5

4) 4+1=5

5) 5+0=5

I already explained abt "B" dial having no Zeros, thus, u are left with 1) to 4) in the combination list above. Then u work your way thru

Hope this helps