Which of the following is the most abundant of all the cells found in the blood of humans?

Erythrocytes or RBC are the most abundant of all the cells in blood of human. On an average, the no. of different cells in a healthy adult human are: Erythrocytes/RBC: 5 millions to 5.5 millions per cubic mm. Platelets/Thrombocytes: $1.5$ lakhs to $3.5$ lakhs per cubic mm.Leucocytes/WBC: 6000 to 8000 per cubic mm.