Which of the following doesn't belong?

20-6-15-18-4

Twenty increased by the quotient of a number and fourteen

Algebraic word phrase b:3

What is the value of the 3 in parenthases [3]45,423,912

Combine the like terms of the den expression (8+6n) + (-2+8y) simplify your answer

Guests at a party are seated at 3 tables. small table has 5 seats and 2 pizzas. medium table has 7 seats and 3 pizzas. the large table has 12 seats and 5 pizzas. which table gets most pizza?

Is personal finance hard?

What is 2+2 = to. My teacher says its not four im confused.

Badal has 120 cm 3 of water. He wants to pour it into a rectangular vase that is 4 cm high, 4 cm wide, and 5 cm long. Can he pour all the water into the vase? Explain.

How many ways are there to partition a group of 16 people into: (a) a group of ten people, a group of four people, and a group of two people. (b) a group of ten people and two groups of three people. (this is a little tricky) ?

A type of cell reproduces by splitting itself in half. One cell becomes 2 cells, 2 cells become 4 cells, and 4 cells become 8 cells. What type of sequence does the number of cells represent, and why?