A) 2
B) 5
C) 6
D) 4
Correct Answer: A
Solution :
Key Idea: Write the exponential form of given significant numbers and then find the significant numbers. Exponential form of\[3400=3.4\times {{10}^{3}}\] \[\because \]all non zero digits are significant numbers. \[\because \]3400 has 2 significant numbers.
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