Which one of the following statements about blood elements is correct?

Asked in UPSC CAPF 2018 · Topic: Circulatory System (Components of Blood: Plasma, Erythrocytes, Leukocytes, Platelets)

1. Red blood cells’ number is same as that of white blood cells and platelets.
2. The number of white blood cells is more than red blood cells.
3. The number of red blood cells is the highest.
4. The number of red blood cells is lower than platelets.

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