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Recent puzzles under tag mathematical

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In a room of 100 people, 99% are left-handed. How many left-handed people have to leave the room to bring that.........
posted 2 days ago by Pankaj Deshmukh
  • logic
  • percentage
  • mathematical
0 votes
Exactly one of these five numbers is a square number. Which one?
posted 3 days ago by Manish Tiwari
  • mathematical
0 votes
Let α = log10 2, β = log10 3, γ = log10 7. Which of the following choices is closest to an integer?
posted 3 days ago by Puneet Batra
  • mathematical
  • algebra
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Solve for all real numbers x such that (x2 – 7x + 11)(x2 – 11x + 30) = 1
posted 3 days ago by Sidharth Malhotra
  • algebra
  • mathematical
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A point inside a pentagon is connected to the midpoints of the sides of the pentagon and to a corner, as shown.........
posted 3 days ago by Amarvansh
  • geometry
  • mathematical
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Leibniz is credited as one of the inventors of calculus. But probability was a developing field, and he made.........
posted 3 days ago by Madhavi Latha
  • logic
  • mathematical
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The arc, centered at point O, is a quarter-circle. Find the simplest formula for the radius of the circle in terms......
posted 4 days ago by Parampreet Kaur
  • geometry
  • mathematical
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The psychologist Max Wertheimer was a friend of Albert Einstein. In 1934, he wrote a letter to Einstein with the......
posted 4 days ago by Chahat Sharma
  • logic
  • mathematical
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If x2 – 3x + 1 = 0, then find the value of x5 + 1/x5.
posted 4 days ago by Brijesh Talwar
  • algebra
  • mathematical
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A supposed proof that 2 + 2 = 5 has been circulating. Can you spot the mistake?
posted 4 days ago by Saif Khanam
  • mathematical
  • logic
0 votes
Can you solve it?
posted Dec 4 by Samardeep Acharya
  • mathematical
  • visual
  • puzzle
0 votes
For the equation below, find the value of k for which the equation has numerically equal but opposite signs.........
posted Dec 2 by Simranjeet Singh
  • mathematical
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A cylinder has a volume of 500 ml and a minimum surface area. Calculate the dimensions of the cylinder’s radius.........
posted Dec 2 by Nikita Sehgal
  • mathematical
0 votes
Solve for all real values of x such that: 2x(3x2) = 6
posted Nov 29 by Rahul Vaidya
  • mathematical
0 votes
Fill a 9×9 grid so that each column, each row, and each of the nine 3×3 grids contains all of the digits from 1 to 9.
posted Nov 27 by Dilbagh
  • number puzzle
  • mathematical
0 votes
In the following diagram, how tall is the table?
posted Nov 26 by Mohammad
  • visual
  • mathematical
  • riddle
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After a company event, a group of engineers get lost and find themselves at an old and rickety bridge. They all need....
posted Nov 25 by Basabdatta Mukherjee
  • riddle
  • mathematical
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On a rainy day, a girl broke up with her boyfriend after being together for eight long years. They decided..........
posted Nov 25 by Deepak Chitragar
  • riddle
  • mathematical
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The problem is: 2x + x = 5
posted Nov 22 by Rajni
  • mathematical
  • algebra
0 votes
Chaya purchased a portable music player for $100 through a deal. She sold it to Sindy for $125. After a year........
posted Nov 21 by Ritika
  • mathematical
0 votes
Kamal read 30 pages of a book on Monday and 1/8 of the book on Tuesday. He completed the remaining 1/4 of the book......
posted Nov 21 by Rahul Chandel
  • riddle
  • mathematical
0 votes
A pattern of triangles is shown below. Fill in the table for figure 5. Calculate the total number of triangles..........
posted Nov 20 by Sandeep Otari
  • riddle
  • mathematical
  • counting
0 votes
Can you solve this below equation.
posted Nov 20 by Ankur Athari
  • mathematical
  • number puzzle
0 votes
What is the probability of rolling a sum of 7 with two fair six-sided dice?
posted Nov 7 by Nikhil Pandey
  • probability
  • mathematical
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What is half of 2 plus 2? How would you answer? Is it 2 or 3?
posted Nov 5 by Brijesh Talwar
  • mathematical
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The two circles are congruent, each with a radius equal to 5. What is the area of the square?
posted Nov 5 by Saif Khanam
  • geometry
  • mathematical
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What is √-4 √-9 equal to?
posted Nov 4 by Kuldeep Apte
  • mathematical
0 votes
You are given with six numbers – 1, 2, 3, 4, 5 and 6. You can arrange them in any order and you can..........
posted Nov 4 by Samardeep Acharya
  • mathematical
  • number puzzle
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A numeric lock has 3 digit code with the below rules: (3,0,2)one number is correct and well-placed; (3,5,6)one number..
posted Oct 29 by Anuradha Tabyal
  • number puzzle
  • mathematical
0 votes
Ram's adolescence lasted for 1/6 of his life. He grew facial hair after 1/12 more. He married Sushma after 1/7......
posted Oct 28 by Yogeshwar Thakur
  • mathematical
0 votes
If after spending 10% of your money, you have $180 left, how much did you start with?
posted Oct 24 by Atif
  • mathematical
0 votes
Is tan 1° a rational number? justify why or why not.
posted Oct 24 by Mohammad
  • mathematical
0 votes
What is the measure of angle EDF shown in the diagram below?
posted Oct 21 by Ritika
  • geometry
  • mathematical
0 votes
What is the perimeter of the composite rectilinear shape?
posted Oct 21 by Vikram Luthra
  • geometry
  • mathematical
0 votes
There are three gallons X, Y & Z. Gallon X having a capacity of eight litres is filled with 5 litres of liquid.........
posted Oct 21 by Varun Kumar
  • mathematical
  • riddle
0 votes
Can You Find the Missing Number?
posted Oct 18 by Rahul Chandel
  • number puzzle
  • mathematical
0 votes
If the mathematical operations are changed in such a way that 10+5-3x4=11, 15+3-5x10=50.........
posted Oct 18 by Sandeep Otari
  • number puzzle
  • mathematical
0 votes
A man has 20,000 Rs which contains 500 and 1000 Rs notes. If the number of 500 Rs notes is 20. Find the number..........
posted Oct 16 by Manish Tiwari
  • mathematical
0 votes
Fill The Empty Squares.
posted Oct 16 by Puneet Batra
  • mathematical
  • number puzzle
0 votes
This is a nice no-calculator question. Which is larger?
posted Oct 16 by Madhavi Latha
  • mathematical
0 votes
There are boxes on a trailer, but you only get to see them from the front, side, and back views. Can you figure out.....
posted Oct 14 by Parampreet Kaur
  • riddle
  • visual
  • mathematical
0 votes
Four children were experimenting with a scale. As each did not want the others to know their individual mass........
posted Oct 14 by Chahat Sharma
  • riddle
  • logic
  • mathematical
0 votes
Fill The Empty Squares:
posted Oct 10 by Kuldeep Apte
  • mathematical
  • number puzzle
0 votes
If 134 = 1916, 245 = 41625, 356 = 92536 then 467 = ? And 578 = ?
posted Oct 10 by Karan Joglekar
  • logic
  • number puzzle
  • mathematical
0 votes
If X + Y = 14, X - Y = 14 then find X ÷ Y = ?
posted Oct 10 by Aastha Joshi
  • mathematical
  • logic
  • number puzzle
0 votes
If A4 = 14, B4 = 78 then C4 = ?
posted Oct 10 by Aastha Joshi
  • logic
  • number puzzle
  • mathematical
0 votes
If A = 46, B = 50, C = 54 Then D = ? And E = ?
posted Oct 9 by Aarati Mahajan
  • mathematical
  • logic
  • number puzzle
0 votes
Narayan Murthy walks from his home to college. One day he wakes up late and walks an incredible 20 km/h from home.......
posted Oct 9 by Simranjeet Singh
  • mathematical
  • speed
0 votes
Sonal asked the class to see if they could find the sum of the first 50 odd numbers. As everyone settled down.........
posted Oct 9 by Pushpak Chauhan
  • logic
  • mathematical
  • number puzzle
0 votes
If 485= 324062 , 572= 351449 , Then 690=?
posted Oct 4 by Prachi Sharma
  • number puzzle
  • mathematical
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