In 300-200 B.C. era, the use of coins by Greek and Indian civilizations was observed. The element used for making coins was:
Which element was used by China around 900-500 B.C.?
In 14th century B.C, which element was put to use by early egyptians?
A coin was tossed 300 times and the result obtained was 200 heads and 100 tails. What is the probability of getting a head if the coin is tossed one more time.