Of the original seven Millennium Prize Problems set by the Clay Mathematics Institute in 2000, six have yet to be solved as of July, 2020:

Question: What is 3/5 of 60 and how do you calculate it? Answer: Divide 60 by 5 to give 12, then multiply 12 by 3 to give 36. Follow the rule divide by the bottom and times by the top.

Some people got 16 as the answer, and some people got 1. The confusion has to do with the difference between modern and historic interpretations of the order of operations. The correct answer today is 16. An answer of 1 would have been correct 100 years ago.

The answer is 43.

Welcome to Webmath! You’ll find hundreds of instant-answer, self-help, math solvers, ready to provide you with instant help on your math problem. Webmath is a math-help web site that generates answers to specific math questions and problems, as entered by a user, at any particular moment.

• P versus NP.
• Hodge conjecture.
• Riemann hypothesis.
• Yang–Mills existence and mass gap.
• Navier–Stokes existence and smoothness.
• Birch and Swinnerton-Dyer conjecture.

The 10 Hardest Math Problems That Remain Unsolved

• The Collatz Conjecture. Dave Linkletter.
• Goldbach’s Conjecture Creative Commons.
• The Twin Prime Conjecture. Wolfram Alpha.
• The Riemann Hypothesis.
• The Birch and Swinnerton-Dyer Conjecture.
• The Kissing Number Problem.
• The Unknotting Problem.
• The Large Cardinal Project.

What is the longest equation in the world? According to Sciencealert, the longest math equation contains around 200 terabytes of text. Called the Boolean Pythagorean Triples problem, it was first proposed by California-based mathematician Ronald Graham, back in the 1980s.

If by ‘simplest’ you mean easiest to explain, then it’s arguably the so-called ‘Twin Prime Conjecture’. Even schoolchildren can understand it, but proving it has so far defeated the world’s best mathematicians. Prime numbers are the building blocks from which every whole number can be made.

Math is a very abstract subject. For students, learning usually happens best when they can relate it to real life. As math becomes more advanced and challenging, that can be difficult to do. As a result, many students find themselves needing to work harder and practice longer to understand more abstract math concepts.

Poincaré Conjecture

A correct solution to any of the problems results in a US$1 million prize being awarded by the institute to the discoverer(s). To date, the only Millennium Prize problem to have been solved is the Poincaré conjecture, which was solved in 2003 by the Russian mathematician Grigori Perelman. He declined the prize money.

Keep it Switch Switch

A recent meta-analysis of research on the performance of students from elementary age through adulthood found boys tend to outperform girls in more complex areas of math such as those involving more advanced problem-solving.

The typical girl is slightly shorter than the typical boy at all ages until adolescence. In the same way, the typical girl weighs a little less than the boy at birth, equals him at age eight, becomes heavier at age nine or 10, and remains so until about age 141/2.

In the natural world, it’s actually the norm that females are larger than males. For one, men remain, on average, larger and stronger than women, 26lbs (10kg) of skeletal muscle, 40% more upper-body strength and 33% more lower body strength.

By high school, boys generally score higher on math in standardized tests, although not by much. By college age, only about a third of female students in the United States pursue degrees in math and science, and by the time they reach the workforce, men outnumber women in the sciences 4 to 1.

Women

Even though girls are known for their kindness and sensitivity, every parent should always remember that boys are equally sensitive but they are unable to express it. A girl will easily come and tell you about her problems and emotions, whereas a boy would bottle them up.

Common wisdom is that the preference for sons is motivated by economic, religious, social and emotional desires and norms that favor males and make females less desirable: Parents expect sons—but not daughters—to provide financial and emotional care, especially in their old age; sons add to family wealth and property …

The sex of a baby is determined by two sex chromosomes inherited from both the genetic parents. A baby will normally inherit one sex chromosome from the mother and one from the father. A woman has two X chromosomes and thus gives either of her X chromosomes.

It’s a boy if:

• You didn’t experience morning sickness in early pregnancy.
• Your baby’s heart rate is less than 140 beats per minute.
• You are carrying the extra weight out front.
• Your belly looks like a basketball.
• Your areolas have darkened considerably.
• You are carrying low.
• You are craving salty or sour foods.

The baking soda gender test is an at-home method that involves combining a pregnant woman’s urine with baking soda to see if it fizzes. Whether or not the urine fizzes is supposed to determine whether the baby is male or female. The baking soda gender test actually looks to determine the baby’s sex, not its gender.

14-17 Weeks Pregnant With Twins

1. Boy or girl? Each baby’s sex organs will form around this time, but you might not find out the genders until 18 to 20 weeks, when an ultrasound might reveal it.
2. Eyes in motion.
3. Tiny movements.

No. That’s not all, Monga says. Moms pregnant with twins complain of more back pain, sleeping difficulties, and heartburn than moms who are carrying one child. Moms pregnant with twins also have a higher rate of maternal anemia and a higher rate of postpartum hemorrhage (bleeding) after delivery.

Many women who are expecting twins find that they have quite noticeable and very early pregnancy symptoms, including tiredness, emotional ups and downs, nausea, vomiting and constipation. Also, body changes with a twin pregnancy are much more obvious than with a single pregnancy.

Types and zygosity