Question

Read the following statements
(i) 12300 has only 3 significant digits
(ii) 1.2300 has only 5 significant digits
(iii) 0.012300 $\times$ 106 has only 3 significant figures
(iv) all trailing zeroes are non-significant digits . Correct statements are

• A. (i), (ii)
• B. (iii), (iv)
• C. only (iv)
• D. (i), (iv)

Answer 1

The correct option is A

(i), (ii)

1. Zeroes placed before other digits are not significant.
2. Zeroes placed between other digits are always significant.
3. Zeroes placed after other digits but behind a decimal point are significant.
4. Zeroes at the end of a number are significant only if they are behind a decimal point as in (c).