Subject :Sam Class : Sample
Which of the following are included in first class levers?
A1, 2 and 4
B1 and 2
C3 and 4
D1, 3 and 4
Which of the following are included in first class levers?
A1, 2 and 4
B1 and 2
C3 and 4
D1, 3 and 4