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What's the Math-ter? Trivia Quiz

It's math dude! But not just your typical math questions. Half of these questions doesn't even require solving, just facts. The rest ... Well, let's just say you may need to use some of your brain cells on them. Enjoy!

A multiple-choice quiz by tropangadam. Estimated time: 7 mins.

Author
tropangadam

Time
7 mins

Type
Multiple Choice

Quiz #
69,054

Updated
Dec 03 21

# Qns
10

Difficulty
Difficult

Avg Score
4 / 10

Plays
2417

Last 3 plays: Guest 110 (2/10), Guest 175 (4/10), Guest 175 (5/10).

One at a Time - Single Page

Question 1 of 10

1. Which of the following is not a branch of mathematics? Hint

Numerology

Geodesy

Calculus

Topology

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Question 2 of 10

2. If the countdown yesterday was 120 days before the New Year, what is the date today?

Answer: (Month, then Day (e.g., January 1))

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Question 3 of 10

3. What do you call the inverse function of the exponential function? Hint

Anti-exponential Function

Logarithmic Function

Transcendental Function

Trigonometric Function

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Question 4 of 10

4. What is the radius of the unit circle?

Answer: (One numeral)

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Question 5 of 10

5. If GEOMETRY means 'earth measurement', what does TRIGONOMETRY mean? Hint

Triangle Measurement

Angle Measurement

Three Measurements

Earth Triangle Measurement

6. The numbers in the sequence 1, 3, 6, 10, 15, ... are called triangular numbers while the square numbers are of course 1, 4, 9, 16, 25, .... The number 1 is of course both triangular and square. So is 36. What is the next number with such a property?

Answer: (A number (It's quite far from 36. Actually, it's more than a thousand farther.))

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Question 7 of 10

7. If common logarithms have 10 as their base, what is the base of the natural logarithms? Hint

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Question 8 of 10

8. The sum of all the interior angles of a convex polygon is 3000 degrees. How many sides does the polygon have? Hint

Impossible

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Question 9 of 10

9. A: How many children do you have? B: Three. A: How old are they? B: Well, I'll tell you this. The product of their ages is 36. A: Hmm... I don't know. B: The sum of their ages is the same as our house number. A: I know your house number but still don't know the answer. B: Okay then. My eldest child is a vegetarian. A: Ahh... Now, I know. So, how old are B's children?

Answer: (Three numeral, separated by a space. Must be from oldest to youngest (e.g. 3 2 1))

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Question 10 of 10

10. The sum of the first 25 positive integers is 325. What is the sum of the cubes of the first 25 positive integers? Hint

81250

211250

203125

105625

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Most Recent Scores

Apr 03 2024 : Guest 110: 2/10
Apr 03 2024 : Guest 175: 4/10
Apr 03 2024 : Guest 175: 5/10
Apr 03 2024 : Guest 175: 3/10
Feb 26 2024 : Starbouy: 0/10

Score Distribution

Quiz Answer Key and Fun Facts

1. Which of the following is not a branch of mathematics?

Answer: Numerology

Numerology is of course *not* the study of numbers but rather, of the occult significance of numbers.

2. If the countdown yesterday was 120 days before the New Year, what is the date today?

Answer: September 4

December 1 is 31 days before January 1 (New Year's Day). November 1 is 31+30=61 days before that while October is 61+31=92 days earlier. September 1 is 92+30=122 days before the January 1. Since yesterday was 120 days before the New Year, it must have been two days later than September 1. Hence, yesterday was September 3 and today is September 4.

3. What do you call the inverse function of the exponential function?

Answer: Logarithmic Function

This means that the domain of the exponential function is the range of the logarithmic function, and vice-versa.

4. What is the radius of the unit circle?

Answer: 1

If my hint didn't give it away for you, the word unit should have.

5. If GEOMETRY means 'earth measurement', what does TRIGONOMETRY mean?

Answer: Triangle Measurement

Trigon is another term for triangle.

Answer: 1225

Triangular numbers are of the form n*(n+1)over 2. 1225 = 49*50 over 2. It's also 35*35, thus making it a square.

7. If common logarithms have 10 as their base, what is the base of the natural logarithms?

Answer: e

Like pi, e is also a trascendental number and very useful as well. It's approximately 2.72.

8. The sum of all the interior angles of a convex polygon is 3000 degrees. How many sides does the polygon have?

Answer: Impossible

The sum of all the interior angles of a polygon is 180*(n-2), where n is its number of sides. Since the number of sides must be a whole number, the sum must be divisible by 180. 3000 isn't, so no such polygon exists.

Answer: 9 2 2

This is a variation of the so-called Census-Taker Problem. The product of the ages is 36, so there are only a few possible triple of ages. The following is a list of all the possibilities, with the corresponding sum of the ages: (36 1 1) - 38, (18 2 1) - 21, (12 3 1) - 16, (9 4 1) - 14, (6 6 1) - 13, (9 2 2) - 13, (6 3 2) - 11, (4 3 3) - 10. Now, A's statement ('I know your house number but still don't know the answer.') tells us that the ages are either 6 6 1 or 9 2 2, for in all the other cases, knowledge of the sum would tell us unambiguously what the ages are.

The last clue then makes sense for it tells us that there *is* an oldest child, eliminating the triple 6 6 1. The answer is thus 9 2 2.

10. The sum of the first 25 positive integers is 325. What is the sum of the cubes of the first 25 positive integers?

Answer: 105625

The sum of the cubes of the first n numbers is equal to the square of the sum of the first n numbers.

Source: Author tropangadam

This quiz was reviewed by FunTrivia editor rossian before going online.
Any errors found in FunTrivia content are routinely corrected through our feedback system.

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Referenced Topics

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