Free sample from the Deskcraft question bank
Trading, quant and some banking interviews throw brain teasers to test composure and quick reasoning. These are real ones from the Deskcraft bank — mental math, probability, market sizing and estimation — with the method worked out, not just the answer.
Model answer
Use the rule of 72: seventy-two divided by fifteen is about 4.8, so just under five years. The rule of 72 approximates doubling time for a compound growth rate.
Model answer
Around 300 to 400. Estimate roughly 30 to 35 lines a page and about 10 to 12 words a line, then multiply. Showing the line-by-line reasoning is the point.
Model answer
Around 20 tonnes. A 737 holds roughly 26,000 liters of jet fuel at about 0.8 kilograms per liter, which is about 20,000 kilograms. It is volume times density.
Model answer
3 in 8. There are three ways to place two heads among three flips, and each specific sequence has probability one-eighth, so three-eighths.
The model answer for this question is inside Deskcraft — along with 1,000+ more, graded practice and voice mocks.
Unlock the full bank →The model answer for this question is inside Deskcraft — along with 1,000+ more, graded practice and voice mocks.
Unlock the full bank →The model answer for this question is inside Deskcraft — along with 1,000+ more, graded practice and voice mocks.
Unlock the full bank →The model answer for this question is inside Deskcraft — along with 1,000+ more, graded practice and voice mocks.
Unlock the full bank →The model answer for this question is inside Deskcraft — along with 1,000+ more, graded practice and voice mocks.
Unlock the full bank →The model answer for this question is inside Deskcraft — along with 1,000+ more, graded practice and voice mocks.
Unlock the full bank →The model answer for this question is inside Deskcraft — along with 1,000+ more, graded practice and voice mocks.
Unlock the full bank →The model answer for this question is inside Deskcraft — along with 1,000+ more, graded practice and voice mocks.
Unlock the full bank →1,000+ questions with model answers, adaptive drills, AI voice mocks, a model auto-grader and deal simulations — with a readiness score across every dimension a real process judges.
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