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The masses of two metal blocks are measured. Block A has a mass of 8.45 g and block B has a mass of 45.87 g.

a. How many significant digits are expressed in these measurements?

b. What is the total mass of block A plus block B?

c. What is the number of significant digits for the total mass?

d. Why is the number of significant digits different for the total mass and the individual masses?

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Reference No.:- M91670785

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