Get to 30
Using 3, 5, 7 and 9 each exactly once and any basic operations, get to 30.
Group the numbers so every value is used exactly once.
9 - 7 = 2.
5 × 3 = 15.
2 × 15 = 30, so (9 - 7) × 5 × 3 = 30.
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5 firm-labeled workbook prompts. Three fully worked examples are open below; use the reveal drill for the rest. No signup.
Use the workbook by stage:
Record one technical answer in 90 seconds, then trim the setup.
Pair one valuation question with one deal or market question.
Run three questions without notes and repeat the answer that wandered.
Read the setup, work the steps, then say the answer cleanly.
Using 3, 5, 7 and 9 each exactly once and any basic operations, get to 30.
Group the numbers so every value is used exactly once.
9 - 7 = 2.
5 × 3 = 15.
2 × 15 = 30, so (9 - 7) × 5 × 3 = 30.
If a company with a P/E of 10x acquires a company with a P/E of 5x in an all-stock deal, is it accretive or dilutive?
Compare the buyer’s P/E with the target’s P/E.
A 10.0x P/E means a 10% earnings yield.
A 5.0x P/E means a 20% earnings yield.
The buyer is issuing lower-yield stock to buy higher-yield earnings, so the deal is accretive, before synergies and other adjustments.
If your depreciation expense goes up by $1,000, explain how this flows through the three financial statements (assume 25% tax).
The tax shield makes cash move differently from net income.
Depreciation rises $1,000, operating income falls $1,000, taxes fall $250, and net income falls $750.
Start with net income down $750, then add back the $1,000 non-cash depreciation. Cash rises $250.
Cash rises $250 and PP&E falls $1,000, so assets fall $750. Retained earnings falls $750. The balance sheet stays balanced.
The remaining prompts stay closed until you commit to an answer. Round labels come from the workbook source, not a fixed interview script.
Yes, potentially - through debt paydown with free cash flow (equity value rises as net debt falls), dividends or dividend recaps during the hold, and cash accumulation. Returns would be modest and could be wiped out by fees/interest if FCF is weak.
No. EBITDA ignores capex, working capital, taxes and lease costs and can be inflated by adjustments. Alternatives: EV/EBIT or EV/(EBITDA - capex) for capital-intensive businesses, EV/EBITDAR for lease-heavy retailers/airlines, P/E and P/BV for banks/insurers, P/FFO/AFFO for REITs, EV/EBITDAX for E&P, EV/Revenue or EV/ARR for unprofitable/high-growth companies, EV/FCF or FCF yield for mature cash generators, industry metrics (EV/subscriber, EV/reserves).
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