Who first proposed the 4 colour theorem in 1852?

What is 640 divide by 5? how do you work out prime factorization of 140? You think of a number When you divide 72 by one more than your number you get the same answer as when you divide 54 by one less than my number. What is my number? How do you calculate cubic capacity of an irregular volume? What is the value of a 1911 and 1912 5 cent nickel with a woman's profile on one side surrounded by 13 stars and the Roman numeral V on the other side? What does the q in chromosome 8q24 mean? What does the does the word theam mean? Is 5.28 centimeters the same length as 528 meters? What is 075 in simplest form? What is the grammatical name for the expression after months of failing? What is a 4 triangle's make? What does the word pertains mean? What is the number of radians in 90 degress? What is a composite number that is divisible by 5? How do you write 102436 in expanded form using exponents? Toss a fair coin 10 times. If you know that at least 7 heads are tossed, what is the probability that your first toss is heads? If someone is born in 1962 how old are they now? What is 228 divided by 10 x 12? What does k equal in 10 - 2k4? What is the probability of random selection of a consonant in this phrase Sean wants to eat at olive garden?