Can You Solve This Ice Cream Cone Riddle?

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iStock

How much is an ice cream cone worth? In this visual riddle by Budapest-based artist Gergely Dudás (who posts comics on Dudolf.com), the answer requires a little math.

The riddle asks you to determine how much an ice cream cone, a scoop of white-colored ice cream (let’s call it vanilla), and a scoop of pink-colored ice cream (let’s call it strawberry) are worth, according to the logic of the puzzle.

Stare at the equations for a while, then scroll down for the answer.

A math riddle that asks you to figure out what numbers each ice cream cone or scoop represents
Gergely Dudás

Ready?

Are you sure?

OK, let's walk through this.

Three ice cream cones multiplied together are equal to the number 27. Since 3 multiplied by 3 multiplied by 3 equals 27, each cone must be equal to 3.

Moving on to the next row, two ice cream cones each topped with a scoop of vanilla ice cream added together equal 10. So since each cone equals 3, the vanilla scoops must each equal 2. (In other words, 3 plus 3 plus 2 plus 2 equals 10.)

Now, a double scoop of vanilla on a cone plus a single scoop of strawberry on a cone equals 11. So if a double-scoop of vanilla equals 4 (2 plus 2) and each cone is equal to 3, the strawberry scoop must equal 1. (Because 4 plus 6 equals 10, plus 1 for the strawberry scoop equals 11.)

And finally, one vanilla scoop on a cone, plus one empty cone, plus a double-scoop of strawberry and a single scoop of vanilla on a cone, all together equals 15. One scoop of vanilla on a cone is equal to 5 (2 plus 3), and an empty cone is equal to 3. Two strawberry scoops plus one vanilla scoop plus one cone can be calculated as 1 plus 1 plus 2 plus 3 (which comes out to 7). So together, one vanilla scoop (5) plus one cone (3) plus a triple scoop with two strawberries and one vanilla on a cone (7) equals 15.

And there you have it.

A cartoon-style legend that shows that one cone equals 3, one white scoop equals 2, and one pink scoop equals 1.
Gergely Dudás

If frozen dairy-themed challenges are your thing, he also has a hidden image puzzle that challenges you to find the lollipop in a field of ice cream cones. Check out more of his work on his website and Facebook.

The 13 Scariest Haunted Houses in America

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iStock

Horror lovers will feel right at home in New York or Ohio. Attractions in those states claim four out of 13 spots on Halloween expert Larry Kirchner’s new list of America’s scariest haunted houses. Drawing upon his 25 years of experience designing and installing Halloween attractions, Kirchner releases the list on his website, Hauntworld.com, each year.

This year, Headless Horseman Hayrides and Haunted Houses in Ulster Park, New York, tops the list. A historic 18th-century manor provides a spooky backdrop to the haunt, which includes a theatrical hayride, corn maze, eight haunted attractions, and escape rooms. “Dr. Dark’s Circus Side Show” (with everyone’s favorite: creepy clowns) will be one of the new themes offered this year, and another new section called “Two Raven’s Manor” will feature stunt actors and a magician.

The runner-up on Kirchner’s list is Field of Screams in Mountville, Pennsylvania. The attraction promises its hayride will be “the most disturbing ride of your life through thick rows of corn.” Expect to see demented doctors, evil nurses, chainsaw and ax murderers, and miscellaneous monsters.

Check out the full list of attractions below, and head to Haunt World’s website for additional details.

1. Headless Horseman Hayrides and Haunted Houses: Ulster Park, New York
2. Field of Screams: Mountville, Pennsylvania
3. The Dent Schoolhouse: Cincinnati, Ohio
4. 13th Gate: Baton Rouge, Louisiana
5. Netherworld: Atlanta, Georgia
6. Nightmare on 13th: Salt Lake City, Utah
7. Haunted Schoolhouse & Laboratory: Akron, Ohio
8. Bennett’s Curse: Baltimore, Maryland
9. Haunted Overload: Lee, New Hampshire
10. Erebus: Pontiac, Michigan
11. Hell’s Gate: Lockport, Illinois
12. The Darkness: St. Louis, Missouri
13. Bayville Screampark: Bayville, New York

You Can Visit Any National Park For Free This Saturday

Mark Ralston, AFP/Getty Images
Mark Ralston, AFP/Getty Images

Looking for something to do this weekend? Within driving distance of one of the country's more than 400 national parks? The timing might work out. On Saturday, September 22, the National Park Service will be celebrating National Public Lands Day by offering free admission to any national park that normally charges an entrance fee.

Established in 1994 by the National Environmental Education Foundation, National Public Lands Day is held annually on the fourth Saturday in September. The day is set aside to recognize and encourage stewardship of green space in individual communities. If you see an opportunity to volunteer that day, you can get a voucher good for admission on a day of your choosing.

Admission to federally owned parks during peak season averages $30 at the 117 locations that require payment for access. Recently, the National Park Service had considered raising the fee to $70 at 17 of the busiest parks. The potential move would help address maintenance and other costs, but it's drawn criticism from conservation groups arguing the locations should remain affordable to visitors. In the end, the NPS decided to raise prices by $5 for one-time entry, or $5 to $10 for an annual pass, though some fees won't rise until 2020.

You can search for parks by state or by activity using the National Park Service Find a Park search engine here. Note that any additional charges for camping or other attractions aren't included in the promotion.

Can't make it this weekend? The parks are open for a fee-free day four times in 2018, down from 10 in 2017. The next date is November 11, in honor of Veterans Day.

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