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NVIDIA NCA-GENL Exam - Topic 4 Question 3 Discussion

[Prompt Engineering]When designing prompts for a large language model to perform a complex reasoning task, such as solving a multi-step mathematical problem, which advanced prompt engineering technique is most effective in ensuring robust performance across diverse inputs?
C) Chain-of-thought prompting with step-by-step reasoning examples.
A) Zero-shot prompting with a generic task description.
B) Few-shot prompting with randomly selected examples.
D) Retrieval-augmented generation with external mathematical databases.

NVIDIA NCA-GENL Exam - Topic 4 Question 3 Discussion

Actual exam question for NVIDIA's NCA-GENL exam
Question #: 3
Topic #: 4
[All NCA-GENL Questions]

[Prompt Engineering]

When designing prompts for a large language model to perform a complex reasoning task, such as solving a multi-step mathematical problem, which advanced prompt engineering technique is most effective in ensuring robust performance across diverse inputs?

Show Suggested Answer Hide Answer
Suggested Answer: C

Chain-of-thought (CoT) prompting is an advanced prompt engineering technique that significantly enhances a large language model's (LLM) performance on complex reasoning tasks, such as multi-step mathematical problems. By including examples that explicitly demonstrate step-by-step reasoning in the prompt, CoT guides the model to break down the problem into intermediate steps, improving accuracy and robustness. NVIDIA's NeMo documentation on prompt engineering highlights CoT as a powerful method for tasks requiring logical or sequential reasoning, as it leverages the model's ability to mimic structured problem-solving. Research by Wei et al. (2022) demonstrates that CoT outperforms other methods for mathematical reasoning. Option A (zero-shot) is less effective for complex tasks due to lack of guidance. Option B (few-shot with random examples) is suboptimal without structured reasoning. Option D (RAG) is useful for factual queries but less relevant for pure reasoning tasks.


NVIDIA NeMo Documentation: https://docs.nvidia.com/deeplearning/nemo/user-guide/docs/en/stable/nlp/intro.html

Wei, J., et al. (2022). 'Chain-of-Thought Prompting Elicits Reasoning in Large Language Models.'

by Micah at Jun 15, 2025, 11:51 PM

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Lenny
7 months ago
D seems interesting, but is it really necessary for math problems?
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Miles
7 months ago
Totally agree, chain-of-thought really helps clarify steps!
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Ciara
7 months ago
Wow, I never considered using external databases for this!
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Kristeen
7 months ago
Really? I thought zero-shot could work just as well.
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Julian
7 months ago
I think C is the best choice for complex reasoning tasks.
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Noemi
8 months ago
Retrieval-augmented generation sounds interesting, but I wonder if it’s necessary for just solving math problems.
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Thomasena
8 months ago
I practiced a similar question where few-shot prompting was mentioned, but I think chain-of-thought might be more reliable here.
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Anglea
8 months ago
I’m not sure if zero-shot prompting would be effective for this type of problem. It feels too vague for multi-step math.
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Tijuana
8 months ago
I remember discussing chain-of-thought prompting in class; it seemed to help with complex reasoning tasks.
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Willow
9 months ago
I think I'm going to go with option C, the chain-of-thought prompting. It just seems like the most robust and reliable approach for ensuring the model can tackle these kinds of complex reasoning tasks. Gotta nail down that step-by-step process.
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Theron
9 months ago
I'm a bit unsure about this one. Zero-shot prompting might work, but I'm worried the model won't have enough guidance to handle the complexity. Retrieval-augmented generation could be interesting, but I'm not sure how well it would work in practice.
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Donette
9 months ago
Chain-of-thought prompting with step-by-step examples sounds like the most promising approach to me. Providing the model with a clear structure and reasoning process could really help it tackle these multi-step problems.
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Michal
9 months ago
Hmm, this seems like a tricky one. I'll need to think carefully about the different prompt engineering techniques and how they might impact the model's performance on complex reasoning tasks.
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Jaclyn
12 months ago
Hmm, chain-of-thought prompting, you say? Sounds like the kind of technique that would really put the 'thought' in 'thought-provoking.' I'm in, let's see those step-by-step solutions!
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Sean
11 months ago
Yes, it helps guide the model through the necessary steps to arrive at the correct solution.
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Sarah
11 months ago
Chain-of-thought prompting is definitely a powerful technique for ensuring robust performance.
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Rodolfo
12 months ago
Zero-shot prompting? What is this, amateur hour? If I wanted to half-ass my way through a problem, I'd just use a calculator. Chain-of-thought is the way to go, folks. It's the difference between being a math wizard and a math magician.
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Henriette
11 months ago
I agree, zero-shot prompting seems too risky for complex tasks. Chain-of-thought keeps you on track.
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Derick
11 months ago
Chain-of-thought is definitely the way to go. It's all about that logical progression.
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Kattie
12 months ago
Retrieval-augmented generation, huh? Sounds fancy, but I bet it's just an excuse to have the model cheat by looking up the answers. I'm going with chain-of-thought, the classic way to go.
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Lili
12 months ago
Chain-of-thought prompting with step-by-step reasoning examples is definitely a solid choice.
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Shawna
12 months ago
I think few-shot prompting with randomly selected examples could also be effective.
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Casandra
12 months ago
I agree, retrieval-augmented generation does sound like cheating.
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Brett
1 year ago
I prefer retrieval-augmented generation with external mathematical databases, as it provides more accurate information.
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Curtis
1 year ago
I agree with Ivory, because it helps the model understand the reasoning process better.
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Ivory
1 year ago
I think chain-of-thought prompting with step-by-step reasoning examples is the most effective.
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Danica
1 year ago
Few-shot prompting? Nah, that's just throwing a bunch of random examples at the wall and hoping something sticks. Give me that good ol' chain-of-thought approach any day!
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Lino
1 year ago
Hmm, this is a tough one. I'd say chain-of-thought prompting seems like the most robust approach. Seeing the step-by-step reasoning really helps the model understand the problem-solving process.
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Dalene
12 months ago
D) Retrieval-augmented generation with external mathematical databases.
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Lorean
1 year ago
C) Chain-of-thought prompting with step-by-step reasoning examples.
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Lenna
1 year ago
B) Few-shot prompting with randomly selected examples.
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Corinne
1 year ago
A) Zero-shot prompting with a generic task description.
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