Square root

Suppose i flip two identical coins. what is the probability that i get one head and one tail?

According to the 2008 u.s. census, california had a population of approximately 4 × 10^7 people and florida had a population of approximately 2 × 10^7 people. which of the following is true? a. the population of florida was approximately two times the population of california. b. the population of florida was approximately twenty times the population of california. c. the population of california was approximately twenty times the population of florida. d. the population of california was approximately two times the population of florida.

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?