Cryptography Question:

(1/10)18 - (1/10)20 = ?

Answer:

If it's the Same Question:
Step 1. (0.1)/18-()/20
Step 2. (0.1)((1/18)-(1/20))
Step 3. 0.1 (10-9)/180 -----------> LCM of 18 & 20 = 180
Step 4. 0.1/180
Step 5. 1/1800 is the Answer
Approx = 0.000557

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