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IFoA_CAA_M0 Exam - Topic 3 Question 94 Discussion

Consider the vector U = (3, -1, 5).Calculatethe magnitude of vector U to two decimal places.
B) 5.92
D) 9.00
C) 7.00
A) 2.65

IFoA_CAA_M0 Exam - Topic 3 Question 94 Discussion

Actual exam question for IFoA's IFoA_CAA_M0 exam
Question #: 94
Topic #: 3
[All IFoA_CAA_M0 Questions]

Consider the vector U = (3, -1, 5).

Calculatethe magnitude of vector U to two decimal places.

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Suggested Answer: B

by Amina at Jan 26, 2026, 10:53 PM

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Anastacia
10 days ago
I got 5.92. Did I calculate right?
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Youlanda
15 days ago
I feel confident about this one. It's basic vector math.
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Corinne
2 months ago
Yeah, it's just the square root of the sum of squares.
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Felicia
2 months ago
I think the magnitude is straightforward. Just use the formula.
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Novella
2 months ago
Wait, how did you get that?
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Eva
3 months ago
Totally agree, 5.92 sounds right!
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Celeste
3 months ago
Are you sure it's not 6?
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Amira
3 months ago
That's about 5.92!
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Aide
3 months ago
Wait, is this a trick question? I'm overthinking this...
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Billye
3 months ago
6.08 is the correct answer. Easy peasy!
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Tori
3 months ago
I got 6.71. Looks like I need to brush up on my vector math.
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Mitsue
4 months ago
The magnitude of vector U is 6.08.
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Phillip
4 months ago
I feel like I’ve seen this type of question before, but I can't recall if I need to include the negative sign in the calculation.
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Brandon
4 months ago
Wait, is it just the square root of (3^2 + (-1)^2 + 5^2)? I hope I remember the formula correctly.
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Mica
5 months ago
I remember practicing a similar question, but I’m not sure if I should round before or after taking the square root.
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Magda
5 months ago
I think the magnitude is calculated using the square root of the sum of the squares of the components, right?
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Cary
5 months ago
Alright, let's do this. First, I'll square each component, then add them up, and finally take the square root. Easy peasy.
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Twana
5 months ago
Wait, what? I'm lost. Can someone explain this step-by-step?
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Billy
5 months ago
No problem, I got this. The magnitude formula is the square root of the sum of the squares of the vector components.
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Dominga
6 months ago
Hmm, I'm a bit unsure about this one. How do I calculate the magnitude of a vector again?
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Gennie
6 months ago
Okay, I think I can handle this. I just need to use the formula for magnitude and plug in the vector components.
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Zona
5 days ago
I remember the formula! It's the square root of the sum of the squares.
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