Go Figure. Using Math to Solve Everyday Imponderables by Clint Brookhart

By Clint Brookhart

Pass determine. is a fascinating and numerous number of maths-related anecdotes, puzzles and formulation. It exhibits readers the entire attention-grabbing issues they could work out utilizing simple algebra.'

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What are the total wages for four 5-day weeks (the twenty working days in a month) using the formula, a1 = 2, r = 2, and n = 20? 50 Not bad for twenty days’ work! Something for Everyone Looking for a Date? Carbon Dating and the Shroud of Turin Carbon dating is a method for determining the age of prehistoric organic material by measuring its radioactivity. The technique was developed by an American chemist, Dr. Willard F. Libby (1908 –1980), in the late 1940s. All living things absorb carbon 14 from carbon dioxide in the atmosphere.

For instance, $100,000 is invested today at 6% annual interest. What annual payment will be provided if the term of the annuity is 20 years? 46 Say your retirement years are imminent. You want to retire now and have a certain annual income of x dollars per year for the next y years. By rearranging the formula for monthly payments, we get the following relation, in which P is the annual income, A is the amount you must invest now, na is the number of years of retirement, and ia is the annual interest rate.

333 3! 3ϫ2ϫ1 3 2 2 ΂ ΃ ΂ ΃ Other games that are found in several states are the Lotto Pick 4 with all numbers in the correct order, Lotto Pick 4 with three digits the same, and match 5 out of 39. The number of possible combinations for each and your odds of winning are as follows: 44 Go Figure! Lotto Pick 4 (with all numbers in correct order) Number of combinations: nr ϭ 104 ϭ 10,000 Odds of winning are 10,000 to 1. Lotto Pick 4 (with three digits the same in any order) Number of combinations: nr ϭ 104 ÷ 4!

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