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There are 2 significant figures in 7.8x109^?

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The number is 78.

Q: How many significant figures in this number 7.8 x 10?

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There are 10 sig. fig.

In both cases, there are 2 significant figures.

10 significant figures.

10 significant figures.

Ten significant figures(Only left -or better: leading zero's are not significant. So even in 0.0001230000000 there are 10!!)

Related questions

How many significant figures are in 0.074100x 10^-4

10 significant figures.

There are 10 sig. fig.

In both cases, there are 2 significant figures.

10 significant figures.

10 significant figures.

10 significant figures.

Non-zero digits are always significant, so the number 12 has two significant figures.

Ten significant figures(Only left -or better: leading zero's are not significant. So even in 0.0001230000000 there are 10!!)

Ten of them.

3 significant figures. 8.53ร10ยน.

145003.0020 has 10 significant figures. A significant figure is any non-zero digit or any embedded or trailing zero. Leading zeros are not significant.