Find the product of 1.2, 2.54 and 3.257 with due regard to significant figures.

Explanation

Out of the three number 1.2 has got the least number of significant figures -two. We should round off the other numbers to `2 + 1= 3` significant figures and carry the multiplication. 2.54 has three significant figures and hence needs no rounding off. 3.257 is to be rounded off to 3.26. `1.2 xx 2.54 xx 3.26= 9.93648`. But the result should be limited to the least number of significant digits-that is two digits only. The final answer should be written as 9.9 after rounding off.