Question
Let 3a=4, 4b=5, 5c=6, 6d=7, 7e=8 and 8f=9. What is the value of the product abcdef?
Answer: Option B
:
B
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B
8f=9→8=91f
7e=8→7e=91f→7 = 91ef
Continuing in the same way we get 3=91abcdef
⟹3=32abcdef
⟹2abcdef=1⇒abcdef=2
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