10+10 and 11+11 can give you the same answer.

Explain how?

Can you solve this tricky maths equation problem by replacing it? mark with the correct symbol?

19834 -----: 187
15921 -----: 153
17561 -----: 139
13734 -----: ???

Given below is simple addition with a defined pattern pattern:
7 + 7 = 2
8 + 8 = 4
8 + 5 = 1
6 + 9 = 3
10 + 11 = 9

Can you analyze the pattern and find out the answer for:

4 + 9 = ?

The more it dries, the wetter it becomes. Can you tell what it is?

Which is the smallest number that you can write using all the vowels exactly once?

Analyze and find the missing item in the sequence:
16, 06, 68, 88, __, 98

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

I’m orange, I wear a green hat and I sound like a parrot. What am I?

What is full of holes but still holds water?

A convention is held where all the big logicians are summoned. The master places a band on everyone's forehead. Now all of them can see others bands but can't see his own. Then they are told that there are different colours of bands. All the logicians sit in circle and they are further explained that a bell will ring at regular intervals. The moment when a logician knew the colour of band on his forehead, he will leave at the next bell. If anyone leaves at the wrong bell, he will be disqualified.

The master assures the logicians that the puzzle will not be impossible for anyone of them. How will the logicians manage ?