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In probability theory, the coupon collector's problem refers to mathematical analysis of "collect all coupons and win" contests. It asks the following question: if each box of a given product (e.g., breakfast cereals) contains a coupon, and there are n different types of coupons, what is the probability that more than t boxes need to be bought ...
Buy one, get one free. " Buy one, get one free " or " two for the price of one " is a common form of sales promotion. Economist Alex Tabarrok has argued that the success of this promotion lies in the fact that consumers value the first unit significantly more than the second one. So compared to a seemingly equivalent "Half price off" promotion ...
Apple Wallet (or simply Wallet, known as Passbook prior to iOS 9) is a digital wallet developed by Apple Inc. and included with iOS and watchOS that allows users to store Wallet passes such as coupons, boarding passes, student ID cards, government ID cards, business credentials, resort passes, car keys, home keys, event tickets, public transportation passes, store cards, and – starting with ...
The present value of $1,000, 100 years into the future. Curves represent constant discount rates of 2%, 3%, 5%, and 7%. The time value of money is the widely accepted conjecture that there is greater benefit to receiving a sum of money now rather than an identical sum later.
Coupon. In marketing, a coupon is a ticket or document that can be redeemed for a financial discount or rebate when purchasing a product . Customarily, coupons are issued by manufacturers of consumer packaged goods [1] or by retailers, to be used in retail stores as a part of sales promotions. They are often widely distributed through mail ...
A CUSIP is a nine-character alphanumeric code. The first six characters are known as the base (or CUSIP-6), and uniquely identify the issuer. Issuer codes are assigned alphabetically from a series that includes deliberately built-in gaps for future expansion. The 7th and 8th digit identify the exact issue.
Heronian tetrahedron. 888 is the 42nd longest side of a Heronian tetrahedron, whose edge lengths, face areas and volumes are all integers; more specifically it is the second-largest longest side of a primitive Heronian tetrahedron (after 203, and preceding 1804) with four congruent triangle faces (this primitive Heronian tetrahedron is a tetrahedron where four edges share no common factor).
92 is palindromic in other bases, where it is represented as 232 6, 161 7, 44 22, and 22 45. There are 92 numbers n {\displaystyle n} such that 2 n {\displaystyle 2^{n}} does not contain all digits in base ten (the largest such number is 168 , where 68 is the smallest number with such a representation containing all digits, followed by 70 and 79 ).