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. \[\therefore \] 3400 has 2 significant numbers.
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