Mathematics Riddles

Can you solve it?

E + E + E = 15

E + C = 8

C + E + B = 10

B + C * J = ????

If 

111 = 13

112 = 24

113 = 35

114 = 46

115 = 57

Then

116 = .....???

Figure out how many trailing zeroes are in 1000! 

Think of a number

Step 1: Multiply it by 3

Step 2: Add 6

Step 3: Divide by 3

Step 4: Subtract the number chosen in step one from the answer in step 4.

What is the answer?

I have 4 corners. I have 4 sides.

I have 2 long sides and 2 short sides.

Who I am?

I have 4 corners. I have 4 sides.

All of my sides are the same length.

Who I am?

How many eggs are left?