John,Mark and Henry Age -Math riddle
61. Math Riddles
John, Mark, and Henry are three brothers. Interestingly, their current age is prime. What's more interesting is that difference between their ages is also prime. How old are they?
Mark is 2, John is 5,
and Henry is 7.
Explanation :
Age diff,
7 - 2 = '5' is prime;
7 - 5 = '2' is prime;
5 - 2 = '3' is prime.
The Wedding Shower Gift - Math Riddle
62. Math Riddles
John was six years old - Math Riddle
63. Math Riddles
How many circles - Math Riddle
64. Math Riddles
How many circles contain the black dots?
Explanation :
If you look carefully at the image, you'll see that the dots are placed in intersection of many circles. So, The correct answer is 12.
Duck Rabit Dog Weight - Math Riddle
65. Math Riddles
Given that the weight of a Rabbit and a Duck is 10 kilograms, the weight of a Dog and a Rabbit is 20 kilograms, and the weight of a Dog and a Duck is 24 kilograms, what is the total weight of a Dog, a Rabbit, and a Duck?
Explanation :
Let the duck be ‘Du’
The dog be ‘Do’
The rabbit be ‘R’.
From the above picture,
we can form equations as,
R + Du = 10kg.…equation (1)
R + Do = 20kg….equation (2)
Do + Du = 24kg…equation (3)
& R + Do + Du = ?
Rearranging the equations,
equation (1) = R + Du = 10kg
Du = 10kg – R
equation (2) = R + Do = 20kg
Do = 20kg – R
Putting the values of Do & Du in equation (3),
Do + Du = 24kg
20kg – R + 10kg – R = 24kg
30kg – 2R = 24kg
2R = 6
Rabbit, R = 3kg
Substituting the value of R, in equation (1) & equation (2)
We get,
equation (1), R + Du = 10kg
3 + Du = 10kg
Duck, Du = 7kg
Also, equation(2), R + Do = 20kg
3 + Do = 20kg
Dog, Do = 17kg.
Adding the values of,
Do + Du + R = 3 + 7 + 17
Dog + Duck + Rabbit = 27kg.
Equation Math riddle with answers
66. Math Riddles
Can you solve this?
Explanation :
2/1 =2
2*1 = 2
2-1= 1
so answer is 1
Move just 2 matchsticks - Math Riddle
67. Math Riddles
Move just 2 matchsticks to make the equation Correct.
Explanation :
9-9=0. Move one from the addition sign to make it a subtraction sign, and put it to 3 to make 9, 2. move one from 8 to make it 9.
Find the missing number- Math Puzzle
68. Math Riddles
Can you find the missing number?
Explanation :
horizontal multiplication - vertical multiplication
6*6 - 7*5 = 1
for answer 7*3 - 9*2 = 3
Photo Math With Answer - Math Riddle
69. Math Riddles
Which number will replace the question mark?
Explanation :
just put the values of the balls and add them you will get 15
How many triangles - Math Riddle
70. Math Riddles
How many triangles can you count in this shape?
Explanation :
Count step by step without leaving any triangle formation
10 small boxes into a carton- Math Riddle
71. Math Riddles
A merchant can place 8 large boxes or 10 small boxes into a carton for shipping. In one shipment, he sent a total of 96 boxes. If there are more large boxes than small boxes, how many cartons did he ship?
Explanation :
7 large boxes (7 x 8 = 56 boxes)
4 small boxes (4 x 10 = 40 boxes)
So the answer is 11 total cartons for 96 boxes
A 35 year old woman - Math Riddle
72. Math Riddles
A 35 year old woman has 3 children. If you multiply the 3 children's ages, you get 36. If you add up the children's ages it's 13. And her oldest child plays basketball for 3 years. How old are the kids?
They are 2, 2, and 9.
Explanation :
If you list out the trio of factors that multiply to 36, you get: 1 1 36 = 38 1 2 18 = 21 1 3 12 = 16 1 4 9 = 14 6 6 1 = 13 2 2 9 = 13 2 3 6 = 11 3 3 4 = 10 If the sum is 13, as you can see, there are 2 options. When she sa ys her 'oldest' you know it cannot be {6, 6, 1} since she would have two 'older' sons, not an 'oldest'.
Find the value - Math Riddle
73. Math Riddles
Can you find the value of the missing number?
Explanation :
The outer number is the sum of the numbers in the two segments immediately across the line connecting big Circle to small Circle.
i.e.
5+6=11,
6+2=8,
2+8=10,
8+1=9,
1+4=5,
4+7=11,
7+9=16
therefore,
9+5 =14
Find The Number - Math Riddle
74. Math Riddles
Can you find the number?
Explanation :
first digit * first digit
third digit * third digit
398 = 964 (3*3 8*8). So 423 = 169 (4*4 3*3)
An Athlete jumping - Math Riddle
75. Math Riddles
An Athlete is jumping. However, every time she jumps she gets a bit more tired, and every jump goes 1/2 as far as her prior jump. Now, for her very first jump, she goes 1/2 of a foot. On her second jump, she goes 1/4 of a foot, and so on and so forth. How many jumps does it take for her to travel 1 foot?
She will never get to the 1-foot mark because you keep adding smaller and smaller amounts!
Explanation :
We will find the maximum value of this process, when this is carried out infinite times.
This process goes like a Infinite GP, whose
First term,a = 1/2ft.
Common Ratio, r = 1/2ft.
Maximum value of this process is One Foot when the athlete jumps forever or Practically, she will never complete her 1 foot.
Hence, Athlete will never complete. her complete .
Here,
As shown in Number line, since we are taking half distance of the previous one.
Starting from 1/2 ft. ,and ending at 1 foot.
The value always tends towardd 1 but never reaches one.