Question

From the point of view of significant figures which of the following statements are correct
(1) 10.2 cm + 8 cm = 18.2 cm
(ii) 2.53 m - 1.2 m = 1.33 m
(iii) 4.2m x 1.4 m = 5.88 m2
(iv) 3.6 m/1.75 sec = 2.1 m/sec
1
(i) & (iv) only
2
(ii) & (iii) only
3) (iv) only
4
(ii) & (iv) only​

Answer 1

Answer:

option 2 is correct.

(ii) & (iii) only

Step-by-step explanation:

by solving the LHS we get RHS except point 4.

bcz 3.6/1.75 = 2.05 not 2.1 .

so in the given options only 2 is there that does not contain point 4 that is (ii) & (iii) only.

so the ans. is option 2.

2

(ii) & (iii) only

Answer 2

Answer:

option 1 (i) and (iv) only

Step-by-step explanation:

Your answer cannot be MORE precise than the least precise measurement. For addition and subtraction, look at the decimal portion (i.e., to the right of the decimal point) of the numbers ONLY. Here is what to do: 1) Count the number of significant figures in the decimal portion of each number in the problem.For multiplication and division use the following rule: The LEAST number of significant figures in any number of the problem determines the number of significant figures in the answer. (You are now looking at the entire number, not just the decimal portion)