【White Nude Taken Down】

UPDATE: May 18,White Nude Taken Down 2017, 5:06 p.m. SGT Updated with the Ministry of Education's new statement.

A math question apparently meant for 7-year-olds has left adults befuddled.

The bonus math question -- which was first said to have originated on a first-grade level exam paper in Singapore -- has been making the rounds on social media.

Singapore's Ministry of Education (MOE) later told Mashable that there were in fact no examinations for Primary 1 students.

SEE ALSO: A math problem for 14-year-olds is stumping the world

The question shows a circular puzzle with five numbers in it. There are four corresponding blanks that are meant to be filled in, but no further information is given on how to solve it.

Original image has been replaced. Credit: Mashable

Adults have been unable to solve it.

"Now that I can't solve this, I feel super uncomfortable," said user Kenny Eng on Facebook.

"Maybe Sheldon from the Big Bang Theory could have done this when he was seven," said Facebook user Mingli Lin.

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"I just finished my course on advanced applied math and I can't solve this. Whoever set this is sick," said user Jacky Wu.

Where did the math question originally come from?

The question first surfaced on an online forum, posted by a user who claims that it was a bonus question taken from a Primary One, or first grade, examination paper.

But Singapore's Ministry of Education (MOE) initially couldn't confirm this. "From the image, we are unable to ascertain if the question was from a school’s Primary 1 examination paper," an MOE spokesperson said in a statement.

The MOE later told Mashableon Thursday that there were in fact "no examinations at Primary 1."

However, the question bears a striking resemblance to one that has previously appeared on a math blog by Gordon Burgin, who calls himself an author of Maths Puzzles. (Mashablehas reached out to Burgin for comment).

The two questions are almost identical, with only one difference. The bottom-left number in Mr Burgin's puzzle is 20 instead of 2.

Original image has been replaced. Credit: Mashable

According to Burgin, the way to solve his puzzle is this:

Original image has been replaced. Credit: Mashable

It's not the first time an exam question has left people stumped

In 2015, people in Singapore were similarly unable to solve a math question nicknamed "Cheryl's birthday."

The question was first reported to be a fifth-grade level question, but was later revealed to be a ninth-grade Maths Olympiad question.

So what is the answer to the original math question you ask?

Your guess is as good as mine.

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