The weights of Rashmi and Anisha are 79.725 kg and 69.45 kg respectively. What are the number of significant digits in the difference between their weights?

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Solution

The correct option is B
5

Convert the given weights to like decimals. Therefore, the given weights are 69.725 and 69.450 kg respectively.

$79.725$
$- 69.450$
$¯ ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯ ¯$
$10.275 k g$
$¯ ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯ ¯$
Number of significant digits in the result = 5

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The weights of Rashmi and Anisha are 79.725 kg and 69.45 kg respectively. What are the number of significant digits in the difference between their weights?

The correct option is B 5 Convert the given weights to like decimals. Therefore, the given weights are 69.725 and 69.450 kg respectively. 79.725 −69.450 ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯ 10.275 kg ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯ Number of significant digits in the result = 5