Consider the power. Note that: Thus: Based on the above example, we can conclude that: To raise a power to a new exponent, we must retain the base and multiply the exponents. Generically: Next: Distributive regarding multiplication

Mother, Daughters and Apples Difficulty Level: A woman will visit her 3 daughters and takes a basket of apples. For the first, give half apples and half more apples. For the second, give half of the remaining apples and half more apple. For the third, again give half of the remaining apples and half more apple, leaving no apple.

Note some examples of operations involving angle measurements. Addition 30º48 '+ 45º10' 43º18'20 "+ 25º20'30" 10º36'30 "+ 23º45'50" Simplifying 33º81'80 ", we get: So the sum is 34º22'20". Subtraction Look at the examples: 70º25 '- 30º15 38º45'50 "- 27º32'35" 90º - 35º49'46 "80º48'30" - 70º58'55 "Note that: Therefore, the difference is 9º 49'35".

A pentagram is a star made up of five straight lines that has five points. We can see it as a star made by joining the points of a regular pentagon. In the Portuguese language, pentagram means a word with five letters. Forming the Nine Times Table Index Next >> When Does a Century Begin?

Filter by difficulty level Very easy (8) Easy (49) Medium (96) Difficult (31) Very difficult (9) Displaying 9 level challenges Very hard: [Remove Filter] Challenge 12 Escalator Challenge 101 The Damn Tomatoes Challenge 106 Radigunda Needs Money Challenge 110 Traveler's Gold Challenge 168 Spinning the Coin Challenge 169 Playing Dice Challenge 170 The Square Starting at 999 Challenge 189 Fourth Power Plus Four Challenge 191 The Boy, Tennis and the Whistles Do you know any mathematical challenges that could be published here?

Birthdays and probability The probability of 40 people not having a birthday on the same day of the year is approximately: Therefore, the probability of at least two people having a birthday on the same day of the year is approximately: 100% - 10.9% = 89.1%. . Back to statement Challenge 110 Traveler's Gold Challenge Index Next >> Challenge 112 The Guava Critter