Skip to main content

Puzzle

Math Puzzles

Mathematics Puzzles

Puzzle 1: What is the value of 8 + 8 ÷ 8 + 8 × 8 − 8?

Answer: 72

Puzzle 2: I am an odd number. Take away one letter, and I become even. What number am I?

Answer: Seven (remove 's' to make "even")

Puzzle 3: If it takes 5 machines 5 minutes to make 5 widgets, how long would it take 100 machines to make 100 widgets?

Answer: 5 minutes

Puzzle 4: A man gave one son 10 cents and another son was given 15 cents. What time is it?

Answer: 1:45. (A quarter to two)

Puzzle 5: Using only addition, how can you add eight 8's to get the number 1,000?

Answer: 888 + 88 + 8 + 8 + 8 = 1000

Comments

Post a Comment

Popular posts from this blog

Mathematics in Indus valley civilization

Mathematics and the Indus Valley Civilization Mathematics and the Indus Valley Civilization 1. Historical Context of the Indus Valley Civilization Geographical Setting: The IVC was located in present-day northwest India and pakistan , primarily along the Indus River and its tributaries. Major cities included Harappa, Mohenjo-Daro, and Dholavira, known for their sophisticated urban planning. Timeframe: The civilization flourished between 3300 BCE and 1300 BCE, making it contemporary with ancient Mesopotamia and Egypt. It is believed to have declined around 1300 BCE due to various factors, including climate change and shifts in river patterns. Urban Planning: Cities were characterized by well-planned street grids, advanced drainage systems, and standardized fired brick structures. The use of mathematics was evident in the dimensions of buildings and the layout of streets. 2. Mathematical Knowledge in...
Post a Comment
Read more

History of the October 1852 Calendar

History of the October 1582 Calendar The October 1582 Calendar: A Historic Transition The year 1582 marked a pivotal moment in the history of timekeeping. This year witnessed the adoption of the Gregorian calendar , which replaced the Julian calendar in several Catholic countries. This transition was introduced by Pope Gregory XIII to correct inaccuracies in the Julian calendar, particularly in the calculation of the spring equinox and Easter. Why the Change Was Necessary The Julian calendar, introduced by Julius Caesar in 45 BCE, was based on a solar year of 365.25 days. However, the true solar year is approximately 365.2422 days long. This slight discrepancy of about 11 minutes per year caused the calendar to drift gradually over centuries, misaligning with astronomical events like equinoxes. By the 16th century, the spring equinox had shifted by approximately 10 days, affecting the date of Easter . This was a significant concer...
2 comments
Read more

South Korea is experiencing a significant demographic shift characterized by a declining population.

: South Korea's Declining Population South Korea is experiencing a significant demographic shift characterized by a declining population. This trend is driven by several socio-economic and cultural factors, posing challenges for the country's future. Current Population Trend As of 2024, South Korea's population has slightly declined by 0.02% from the previous year, bringing the total population to approximately 51.7 million. Projections indicate that this trend will accelerate, with the population potentially dropping to around 34.4 million by 2070. Key Causes of Population Decline Low Fertility Rate: South Korea's fertility rate is one of the lowest globally, at 0.78 children per woman, far below the replacement level of 2.1. High Costs of Living: Child-rearing costs are prohibitively expensive, discouraging families from having children. Cultural Shifts: Many young adults prior...
1 comment
Read more