The number of RBC per mm³ of blood is approx. 5.5 million. If the average body contains 5 litres of blood, what is the total number of RBC in the human body? Write it in the standard form.

2.75 × 10¹³

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0.275 × 10¹⁴

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275 ×10¹⁰

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none of these

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Solution

The correct option is A
2.75 × 10¹³

5.5 millions = 5.5 × 1000000 = 5500000

In 1 mm³ there are 5500000 numbers of RBC.

In 5 litres there are 5500000 × 1000000 × 5 = 27500000000000

= 2.75 × 10¹³

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The number of RBC per mm3 of blood is approx. 5.5 million. If the average body contains 5 litres of blood, what is the total number of RBC in the human body? Write it in the standard form.

The correct option is A 2.75 × 1013 5.5 millions = 5.5 × 1000000 = 5500000 In 1 mm3 there are 5500000 numbers of RBC. In 5 litres there are 5500000 × 1000000 × 5 = 27500000000000 = 2.75 × 1013

The number of RBC per mm³ of blood is approx. 5.5 million. If the average body contains 5 litres of blood, what is the total number of RBC in the human body? Write it in the standard form.

The correct option is A
2.75 × 10¹³

5.5 millions = 5.5 × 1000000 = 5500000

In 1 mm³ there are 5500000 numbers of RBC.

In 5 litres there are 5500000 × 1000000 × 5 = 27500000000000

= 2.75 × 10¹³