#21 - Hard Find The Odd One Out Problem

Find the Odd One Out ?
84129
32418
47632
36119
67626
72927

Hard Find The Odd One Out Problem

47632
All the others are three digit numbers followed by their square root, eg 361 followed by its square root, 19.

#22 - Similar Figures Problem

You can see a blue figure and then, there are seven different figures that seems to be identical to the blue one however not all are. Can you find the identical ones to the blue figure?

Similar Figures Problem

B, D and E are identical to the blue figure.

#23 - Odd Number Puzzle

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

2716 is the odd one out.

This is because the rest of the numbers add up to be a prime number.
4 + 1 + 3 + 5 = 13
5 + 3 + 2 + 1 = 11
7 + 1 + 4 + 5 = 17

However, in the case of 2716,
2 + 7 + 1 + 6 = 16 which is not a prime number.

#24 - Odd One Out Maths Riddle

Solve this maths riddle by finding the odd image from the rest.

Odd One Out Maths Riddle

Image-3Only the third image is not symmetric to vertical axis as shown in pic below.