Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

What number should come in place of the question mark below?

As shown in the image, the nine Dogs are square fenced. By constructing just two square fences can you make sure that two Dogs cannot meet each other without crossing the fence?

Considering the below equation:

V + II - VI = 10
IV - X + VIII = 20
IV - VII + VI = 30

Then, I + II + III = ?

Identify the hidden meaning behind this picture?

What is the next number in the series?

15 29 56 108 208 ?

_ _ _ IE _ _
_ _ _ IE _
_ _ IE _ _
_ _ IE _
_ _ _ _ IE

Like you see, some letters have gone missing from these words that contain the IE pair at some or the other place. The letters that will be used to fill the blanks are given below. Use them and form meaningful words. Can you do that?

A, C, D, F, H, K, L, M, N, N, O, R, R, S, S, S, T, T, Y and Y.

Find the smallest sentence with all the English alphabet.

Can you count the number of triangles in the picture below?

Complete the table series riddle by finding the number that can replace "??".