Question

How many significant figures are present in 4.01 * 10^2

Answer 1

Answer:

3

Explanation:

while counting the significant figures, powers are not considered

Answer 2

4.01 * 10² comprises 3 significant figures.

• All the non-zero digits are significant.
• All the trailing zeroes present toward the right of the decimal are significant.
• All the zeroes between non-zero numbers are significant.
• Trailing zeroes in a whole number without a decimal expansion are not significant
• Trailing zeroes in a whole number with a decimal expansion are not significant.
• Leading zeroes are not significant.
• For a number expressed scientific notation n *, all digits comprising n are significant, and "10" and "x" are not significant.
• Hence, by the above rules, 4.01 * 10² comprises 3 significant figures.

∴ 4.01 * 10² comprises 3 significant figures.

#SPJ3