In this category we have mathematical puzzles which requires some kind of math to solve, like: algebra, equations, permutation and combinations.
Some of these maths puzzles are very simple and some are very hard, check these out, we are sure you will like it for sure.
We’ve got whole milk (with 4% fat) and low-fat milk (with 1% fat).
How much low-fat milk should be added to 50 liters of whole milk to get milk with 3% fat?
Check your answer:-
50*(4/100) + L*(1/100) = (50+L)*3/100
=> 200 + L = (50+L)*3
=> 200 – 150 = 2L
=> 2L = 50
=> L = 25 liters.
Scientists were trying out a new lie detection test based on a needle. The needle indicates red if it a lie and green if it’s true. For any person lying, there is a 75% chance of the needle pointing towards red. For a person not lying, there is a 90% chance of the needle pointing towards green. It is known that 10% of people who go for the test are lying.
If a person who tests to have lied, If the probability that they actually lied is P, then 11P equals?
| There are a mix of red, green and yellow balls in a bag. The total number of balls is 60. There are four times as many red balls as green, and six more yellow balls than green balls. How many balls of each color are there? |
Cow’s milk has 5% fat. How much milk without fat should be added to 40 liters of cow’s milk to get 4% fat?
Fill in the above matrix boxes so that the 1st, 3rd and 5th row is 20, 48 and 38 respectively while the 1st, 3rd and 5th column is 0, 80 and 10.
Can you solve this complicated math puzzle formed of shoes, bottles and robot?
Check your answer:-
now put everything in 4th equation
1 shoe + (3B + 1 pair of shoes + 1 box)x 1Bottle =>
5 + (6 + 10 + 5)x2 => 5+ 21×2 => 5 + 42 => 47
Use numbers 1-9 in box
()()
×()
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()()
+()()
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()()
numbers should not repeat
X |
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21 5
