Which word does NOT belong with the others?

8 x 1 - 2 = 6
6 x 2 - 3 = 9
9 x 3 - 4 = 23
23 x 4 - 5 = 87
87 x 5 - 6 = 429 ...

In this simple subtraction series, each number decreases by 0.4.

This is a simple multiplication series. Each number is 3 times more than the previous number.

This is an alternating addition and subtraction series. In the first pattern, 10 is subtracted from each number to arrive at the next. In the second, 5 is added to each number to arrive at the next.

This is a simple subtraction series. Each number is 35 less than the previous number.

An ounce measures weight; the other choices measure length.

Tyre, steering wheel, and engine are all parts of a car.

Tulip, rose, and daisy are all types of flowers. A bud is not.

Loaf, sourdough, and pumpernickel are types of bread. A rye is not a bread type.

Loaf - Bread that is shaped and baked in one piece and usually sliced before being eaten.

Pumpernickel - Dark, dense German bread made from coarsely ground whole-grain rye.

Sourdough - Leaven for making bread, consisting of fermenting dough, typically that left over from a previous batch.

Rye - A wheatlike cereal plant that tolerates poor soils and low temperatures.

The guitar, violin, and cello are stringed instruments; the flute is a wind instrument.