In an Eight-Cylinder Engine, the Even-Numbered Cylinders Are on the Left

question 108

Short Answer

In an eight-cylinder engine, the even-numbered cylinders are on the left and the odd-numbered cylinders are on the right. A good firing order is a sequence of the numbers 1 through 8 in which right and left sides alternate.

a. How many possible good firing sequences are there ?
__________ sequences

b. How many good firing sequences are there that start with a cylinder on the left ?
__________ sequences

---

Definitions:

Credit Phase-Out

A gradual reduction in the amount of a tax credit as a taxpayer's income surpasses certain threshold levels, until the credit is reduced to zero.

AGI

Adjusted Gross Income (AGI) is an individual's total gross income minus specific deductions, used in calculating taxable income.

Adoption Credit

A tax credit that offsets qualified adoption expenses, making adoption financially more accessible for families.

Qualified Expenses

Expenditures that may be eligible for tax deductions or credits, often related to education, healthcare, or investments.