What is the missing number?MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 30
The first user who solved this task is Thinh Ddh.
#brainteasers #math #riddles
Dallas Lore SharpBorn 13 Dec 1870; died 29 Nov 1929 at age 58. American professor of English who was among the most popular nature writers of his time. His essays familiarized his readers with the natural world on their doorstep in the local woods and fields. In 1901 he published his first book, Wild Life Near Home. Rather than expansive vistas of the wilderness, Sharp wrote in the small-scale about flora and fauna of the back yard and pasture, such as the pines, persimmon, bees, chipmunks, muskrat and chick-a-dee. He urged people to take an interest in conservation, as in his bookThe Lay of the Land. Some of his books sold over one hundred thousand copies. He wrote many essays for popular magzines such as Atlantic Monthly. He died of a brain tumour with more than 20 books to his credit.«