what does this picture(rebus) riddle means ?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

In a competitive exam, each correct answer could win you 10 points and each wrong answer could lose you 5 points. You sat in the exam and answered all the 20 questions, which were given in the exam.
When you checked the result, you scored 125 marks on the test.

Can you calculate how many answers given by you were wrong?

Let's play a word game. Following are some meaningless words that can be completed by adding random letters on either side of the word.

For example, the word "rdo" can be formed into "pardon".

Using the same technique, can you complete the given words?
ecalc
airb
rinci
tibac
uidel
gorit
igna
eyho

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

It has horns but can’t beep. It is like to bleat but It is not a sheep. What is it?

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?

If I put in one canary per cage, I have one bird too many. If I put in two canaries per cage, I have one cage too many. How many cages and canaries do I have?

A few friends are enjoying their sea voyage in a boat full of apples. On the way, they felt hungry and thus decided to eat the apples. Together, they ate two dozen of apples. When they have eaten the apples, will there be any change in the water level?