number of possible pins = 9 x 10 x 10 x 4 = 3600
Answer:
1. true 2.false 3.a 4.d 5.c 6.d 7. true 8.true 9.true 10.true
Explanation:
Answer:
In the early 1900s, military moved their resources to distant locations with the help of trains, ships, and, to a lesser extent, horse-drawn wagons. This was so because at that time airplanes did not yet exist, capable of transporting inputs to any part of the world in a very short period of time. Therefore, inputs and resources were brought by sea and, if impossible, through land, using railways or highways.