Kara and I will be visiting the Motor City ComicCon this afternoon, which means we may be distracted by the likes of Erin Gray and Peter Tork. In the meantime, enjoy the mentalfloss.com Brain Game Free-for-all Friday challenge. Good luck! WARD, REED, ROSS, IVAN... Which of the following four-letter names best completes the above list, and why? OMAR, BONY, THOM, CARL Here is the ANSWER. THE ANSWER: BONY. Each name, when prefaced with a successive letter of the alphabet, forms a word: A +... READ ON

Today's mentalfloss.com Brain Game Think Thursday challenge needs but a number for its "solvation." Good luck! Identify the missing number in this sequence: 2, 2, 4, 12, 16, ?, 86, 602, ... Here is the ANSWER. THE ANSWER: 80 The sequence is times-1, plus-2, times-3, plus-4, times-5, plus-6, etc. Thanks for playing! Tomorrow, it's Free-for-all... READ ON

Today's Wednesday Wordplay challenge at the mentalfloss.com Brain Game asks you to choose between four commonly-misspelled words that end with the letters "ABLE." Three are spelled correctly; one is not. Good luck! Just ONE of the four words in the following list is misspelled. Identify the culprit: CHANGEABLE EXCITEABLE MANAGEABLE NOTICEABLE Here is the ANSWER. THE ANSWER: The misspelled word is EXCITEABLE. The correct spelling is EXCITABLE. Thanks for playing! Tomorrow, it's Think... READ ON

Good luck with today's mentalfloss.com Brain Game Tuesday Test Time challenge: Only two U.S. states have capital cities whose names begin and end with the same letter of the alphabet. Name these states (and their capitals). Here are the ANSWERS. THE ANSWERS: ATLANTA, Georgia, and AUGUSTA, Maine. Thanks for playing! Tomorrow, it's Wordplay... READ ON

To moms everywhere, we dedicate today's Monday Math Square mentalfloss.com Brain Game challenge. Place the digits 1 through 9 in the white blanks so that the mathematical equations work both across and down. Each digit 1 through 9 should appear only once in the main grid (the red square). Here is the SOLUTION. NOTE: These puzzles rarely (but occasionally) have alternate solutions that fit the rules. If you find one of these, first make sure that you've followed the instructions to the... READ ON

The mentalfloss.com Brain Game. Free-for-all Friday. Have at it! Here's an alphabetical list of five words: BLACKED, PACKAGE, POLLACK, SLACKED, TACKIER Which one of the following four words best fits in with the above group, and why? BACKLOG, CRACKLE, CUTBACK, QUACKED Here is the ANSWER. THE ANSWER: BACKLOG. Each of the five words still form a word when the letter sequence "ACK" is removed. BLACKED - ACK = BLED PACKAGE - ACK = PAGE POLLACK - ACK = POLL SLACKED - ACK = SLED TACKIER -... READ ON

Can you win mentalfloss.com Brain Game Think Thursday challenge? It's a gamble! In the betting game known as craps, the player starts by rolling two dice and combining their values. On the first roll, 7 or 11 is an automatic win (a "pass"), while a roll of 2, 3, or 12 is an automatic loss ("craps"). Every other roll is called a "point" and allows the roller to keep rolling in an effort to match that point. On the first roll of the dice, what are the odds of a craps roller rolling a point instead of... READ ON

Today's mentalfloss.com Brain Game Wednesday Wordplay challenge is a Word Ladder puzzle named after an old Ned Miller song. Good luck! By changing one letter in each step to form English words, and leaving all other letters in their original positions, convert JACK into KING in the fewest possible steps. J A C K _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ K I N G Here is one 5-step SOLUTION. A 5-STEP SOLUTION: J A C K T A C K T I C K K I C K K I N K K I N G Did you come up with a different... READ ON

Geography is a common subject for the mentalfloss.com Brain Game's Tuesday Test Time challenge. Maybe we'll change the name to Tuesday Travels. What do you think? Name the 5 independent South American nations whose short-form English names end with the letter A. Here are the ANSWERS. THE ANSWERS: ARGENTINA, BOLIVIA, COLOMBIA, GUYANA, and VENEZUELA. Tomorrow, it's Wordplay... READ ON

It's the first Monday in May, so merrily mull over this Monday Math Square as today's mentalfloss.com Brain Game challenge. Good luck! Place the digits 1 through 9 in the white blanks so that the mathematical equations work both across and down. Each digit 1 through 9 should appear only once in the main grid (the red square). Here is the SOLUTION. NOTE: These puzzles rarely (but occasionally) have alternate solutions that fit the rules. If you find one of these, first make sure that... READ ON

Good luck with today's mentalfloss.com Brain Game Free-for-all Friday challenge: Examine the 4 pro baseball game scores that follow, then figure out the score of the 5th game: Chicago 1, New York 0 Philadelphia 5, Miami 2 Cleveland 2, Baltimore 0 Los Angeles 3, Kansas City 2 Seattle ?, Oakland ? Here is the SOLUTION. THE SOLUTION: Seattle 2, Oakland 1. The scores represent the number of letters that appear twice in each city's name. Thanks for playing, and have a great... READ ON

Here's a new mentalfloss.com Brain Game Think Thursday challenge for your consideration. Enjoy! What's the missing number in the sequence below? 3, 7, 8, ?, 50, 60 Here is the ANSWER. THE ANSWER: 40. They're all the numbers that can be spelled with exactly five letters: three, seven, eight, forty, fifty, sixty. Thanks for playing! Tomorrow, it's Free-for-all... READ ON

Today's Wednesday Wordplay challenge at the mentalfloss.com Brain Game offers a list of five commonly-misspelled words that begin with the letter "P." Four are spelled correctly; one is not. Just ONE of the five words in the following list is misspelled. Identify the culprit: PAMPHLET PERSISTENT PLAYWRIGHT PRESCENCE PRONOUNCE Here is the ANSWER. THE ANSWER: The misspelled word is PRESCENCE. For the correct spelling, remove the first "c" to make PRESENCE or add an "i" to make... READ ON

Don't worry, you won't need a passport (or a sporting event program) to solve the Tuesday Test Time challenge for today's mentalfloss.com Brain Game. The United States has direct borders with only two countries - Canada and Mexico - but those international borders are always hot topics of conversation. Can you imagine sharing a direct border with nine different nations? And which country are we talking about? Let's see: Germany borders 9 European nations. Name as many as you can. Score +2 for a... READ ON

Today's mentalfloss.com Brain Games challenge is a brand-new Monday Math Square. Good luck! Place the digits 1 through 9 in the white blanks so that the mathematical equations work both across and down. Each digit 1 through 9 should appear only once in the main grid (the red square). Here is the SOLUTION. NOTE: These puzzles rarely (but occasionally) have alternate solutions that fit the rules. If you find one of these, first make sure that you've followed the instructions to the letter,... READ ON

Let's face it; the weekend just won't arrive if we don't fly a new mentalfloss.com Brain Game Free-for-all Friday challenge up the proverbial flagpole. Enjoy! Which letter of the alphabet is missing from the following list, and what does the list represent? B, ?, N, P, Q, R Here is the ANSWER. THE ANSWER: The missing letter is K. The list represents the written notation of the 6 different pieces in the game of chess: B = bishop K = king N = knight P = pawn Q = queen R = rook Thanks... READ ON

Visit a waterfall at dusk and you may see moonbows—nighttime rainbows.