# 100+ Challenging math riddles to keep your mind sharp #### Rooster Eggs and Bananas - Math Riddle

###### 106.Math Riddles

Can you solve this Viral Rooster Eggs and Bananas Equation Puzzle? • A.36
• B.40
• C.35
• D.50
A.36
• ```Explanation :  36
20+20+20=60
20+3+3=26
3+6+6=15
20+4*4=36```

#### A fireman Jacob - Math Riddle

###### 107.Math Riddles

A fireman Jacob stood at the center of a ladder and was spraying water on a burning house. He climbed up 6 rungs before the heat of the flames forced him to come down 10 rungs. Some minutes later, Jacob climb 18 rungs to the very top of the ladder. How many rungs did the ladder have?

• A.29
• B.30
• C.70
• D.40
A.29
• ```Explanation :  Jacob standing on the middle rung.He goes up 6 rungs so he is now at M+6 and when he goes down 10 rungs so he is at M 4.
Jacob goes up 18 rungs so he is now at M+14 = T
14 rungs from the top, 14 rungs from the bottom, and the middle rung.
14+14+1=29```

#### Picture equation - Math Riddle

###### 108.Math Riddles

Can you solve the below picture equation brain teaser? • A.70
• B.120
• C.200
• D.100
D.100
• ```Explanation :  100
30+30+30=90
30+100+100=230
80+100+30=210
50-30+80= 100```

#### Fill the boxes - Math Riddle

###### 109.Math Riddles

Fill the boxes using (1, 3, 5, 7, 9, 11, 13, 15) You can also repeat the numbers • `30`
```Explanation :  There can be multiple solutions to this problem.
Listing three of them
A) 11+13+6(rotating 9) = 30
B) 11+13+3! = 30
c) 11.5+5.5+13 = 30```

#### Jennifer decides to invest in Ethereum - Math Riddle

###### 110.Math Riddles

Jennifer decides to invest in Ethereum. He pays \$12000 for it. After one day, the Ethereum value has increased to \$13000 and so Jennifer decides to sell it. But the next day she regrets her decision and she buys it again. Unfortunately, at a higher price and has to pay \$14000 to get it back, so she loses \$1000. The very next day, he sells the Ethereum for \$15000.

Did he make any overall profit? If yes, How much?

• `\$2,000 `
```Explanation :  \$2000
Profit from 1st transaction = \$1000 (13000-12000)
Profit from 2nd transaction = \$1000 (15000-14000)
So the overall profit will be = \$2000.```

#### A Group of 90 students - Math Riddle

###### 111.Math Riddles

A Group of 90 students is there is sports group.

"Football is played by 30 students. Volleyball is played by 40 students. Basketball is played by 25 students. 15 students play both Football and Volleyball. 10 students play both Football and Basketball. 8 students play both Volleyball and Basketball. 23 students are not playing any games." • A.7
• B.3
• C.10
• D.5
D.5
• `Explanation :  Only 5 players are intersecting with all the games in the pie chart`

#### Vehicle make scale balance - Math Riddle

###### 112.Math Riddles

Which vehicle is needed to make scale balance? • A.Carriage
• B.Bus
• C.Car
• D.noneofthem
A.Carriage
• ```Explanation :  Let us assume
Carriage = 2, the Car = 3 and the Bus = 6
6+3+2= 3+3+3
If we remove carriage it will be balancedCarriage = 2, the Car = 3 and the Bus = 6
6+3+2= 3+3+3
If we remove carriage it will be balanced```

#### Algebraic equation - Math Riddle

###### 113.Math Riddles

Can you solve the below Algebraic equation? • A.50
• B.30
• C.45
• D.25
D.25
• ```Explanation :  First Equation
1Red Flower + 1Red Flower + 1Red Flower = 60
Hence, 1Red Flower = 20
Second Equation
Red Flower + 5Blue Petals + 5Blue Petals = 30
20 + 10Blue Petals = 30
10Blue Petals = 10
Hence 1Blue Petals = 1
Third Equation
5Blue Petals + 2Yellow Flower = 3
5 + 2Yellow Flower = 3
2Yellow Flower = 2
Hence, 1Yellow Flower = 1
Required
Yellow Flower + Red Flower + 4Blue Petals = ?
Hence, 1 + 20 + 4 = 25```

#### Two soap of equal weights - Math Riddle

###### 114.Math Riddles

We have two soap of equal weights and a 3/4 pound weight. The balance was equal when we placed one soap on one side and 3/4 pound weight and 3/4th soap on another side.

What is the weight of soap? • `3 lbs.`
```Explanation :  Based on information provided, we can deduce that
3/4 lbs = 1/4 of soap weight
=> soap weight = 4 x 3/4 = 3 lbs```

#### Four digit number based on three clues - Math Riddle

###### 115.Math Riddles

Can you find a four digit number based on three clues below? Clue 1: Its first digit is of no use. Clue 2: Its second and fourth digit is the mirror image of each other. Clue 3: The third digit is half the second. • `848`
```Explanation :
Clue 1: Its first digit is of no use.
The digit '0' at the start of the number is of no use.

Clue 2: Its second and fourth digit is the mirror image of each other.
The number '8' is the only digit that is the mirror image of itself.

Clue 3: The third digit is half the second.
4 is half of 8```

#### The height of red bar - Math Riddle

###### 116.Math Riddles

Can you determine the height of red bar with the help of information provided in the picture below? • A.8
• B.6
• C.10
• D.15
A.8
• ```Explanation :  8m
From green bar, we can deduce that
the height of vertical bar = 2/3 of uninterrupted shadow length of the bar.
Therefore shadow of 6m of red bar indicates the height of 4m.
The remaining red bar casts a direct 1:1 vertical projection on the wall.
Therefore total length = 4m + 4m = 8m.```

#### Identify the logic - Math Riddle

###### 117.Math Riddles

Can you identify the logic behind the equation below and solve the puzzle by completing the equation? 12 + 13 + 7 = 1, 15 + 16 + 11= 2, 17 + 18 + 16 = ?

• A.5
• B.4
• C.7
• D.9
B.4
• ```Explanation :  Logic Used: Sum the numbers and then subtract the two digits to get the desired answer.
12 + 13 + 7 => 32 => 3-2 => 1
15 + 16 + 11 =>42 => 4-2 => 2
17 + 18 + 16 = 51 => 5-1 => 4```

#### Replace each alphabet with the number - Math Riddle

###### 118.Math Riddles

Can you replace each letter with the number (1 - 9) to make all equation correct ? AB - C = DE / F = GH * I

• `39`
```Explanation :  45-6 = 78 / 2 = 39 * 1

A = 4
B = 5
C = 6
D = 7
E = 8
F = 2
G = 3
H = 9
I = 1

So below equation can be solved as:
AB - C = DE / F = GH * I
45 - 6 = 78/2 = 39 * 1
39 = 39 = 39.```

#### Considering below equationr - Math Riddle

###### 119.Math Riddles

Considering below equation holds V + II - VI = 10 , IV - X + VIII = 20 , IV - VII + VI = 30 Then, I + II + III = ?

• A.50
• B.80
• C.70
• D.60
D.60
• ```Explanation :  60
V + II   VI = 10
=> I = 10
IV   X + VIII = 20
=> II = 20
IV   VII + VI = 30
=> III = 30
I + II + III = 10 + 20 + 30```