Question

A robot can move forward in steps of size 10 cm, 20 cm, or 30 cm. Note that moving 10 cm and
then 20 cm is different from moving 20 cm and then 10 cm. In how many ways the robot can
move forward 60 cm?

Answer 1

We recall the concept of addition

Addition is sum of two or more numbers

Given:

A robot can move in steps of $10cm,20cm,30,cm$

Robot can move forward by $60 cm$ in following ways

$(30,20,10),(30,10,20),(10,20,30),(10,30,20),(20,30,10),(20,10,30)$

Robot can move forward by $60 cm$ in $6$ ways

Answer 2

Answer:

Robot can move forward by  in  ways '6' ways.

Step-by-step explanation:

We recall the concept of addition

Addition is sum of two or more numbers

Given:

A robot can move in steps of $10$cm, 20cm, 30cm

Robot can move forward by  in following ways

(30,20,10) (30,10,20) (10, 20, 30) (10, 30, 20) (20, 30, 10) (20,10,30)

Therefore, Robot can move forward by  in  ways '6' ways.