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Quiz about Pick the Incorrect Number
Quiz about Pick the Incorrect Number

Pick the Incorrect Number Trivia Quiz


Each of these questions will be about number patterns. All you have to do is tell me which of the options presented does not fit. Enjoy!

A multiple-choice quiz by timence. Estimated time: 3 mins.
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Author
timence
Time
3 mins
Type
Multiple Choice
Quiz #
362,151
Updated
Dec 03 21
# Qns
10
Difficulty
Average
Avg Score
6 / 10
Plays
2134
Awards
Top 35% Quiz
- -
Question 1 of 10
1. If I have a pattern that starts with 1, 4, 9, 16, 25... and so on, which of the following numbers would not appear? Hint


Question 2 of 10
2. Which of the following numbers does not fit the pattern: 1, 1, 2, 3, 5, 8, 13...? Hint


Question 3 of 10
3. If I were to produce a pattern in binary, which of the following options could I NOT possibly see? Hint


Question 4 of 10
4. What number will not appear in the following pattern? 2, 3, 5, 7, 11, 13, 17...? Hint


Question 5 of 10
5. Which number does not appear if the following pattern is continued: 1, 3, 6, 10, 15, ...? Hint


Question 6 of 10
6. Is it correct that the number 144 does NOT appear in the number pattern 1, 8, 27, 64, ...?


Question 7 of 10
7. Which number would NOT appear if the following pattern was continued? 3, 5, 9, 17, 33, ...? Hint


Question 8 of 10
8. Let's look at a descending pattern now. Which number does NOT appear in the following pattern:
1, 0.5, 0.25, 0.125, ...?
Hint


Question 9 of 10
9. Which number does NOT fit the following pattern: 1, 1, 2, 1.414, 3, 1.732, 4, 2, ...? Hint


Question 10 of 10
10. Finally let's have a look at a binary pattern. From the following pattern, which of the following numbers would NOT appear in the first 10 elements: 1, 10, 11, 100, 101, ...? Hint



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quiz
Quiz Answer Key and Fun Facts
1. If I have a pattern that starts with 1, 4, 9, 16, 25... and so on, which of the following numbers would not appear?

Answer: 132

The pattern is square numbers. The number 132 is equivalent to 11x12 and therefore does not fit. A square number can end only with the following digits: 0, 1, 4, 6, 9, or 25.
2. Which of the following numbers does not fit the pattern: 1, 1, 2, 3, 5, 8, 13...?

Answer: 35

This is the Fibonacci sequence, named after mathematician Leonardo Fibonacci who first uncovered it in the early 13th century. The pattern is simply the sum of the previous two elements; therefore 34 appears (21+13) rather than 35. The sequence has since been found to exist in many natural occurences, such as the distribution of flowers and seeds in plants.
3. If I were to produce a pattern in binary, which of the following options could I NOT possibly see?

Answer: 12

Binary numbers only use the digits 0 and 1; therefore the number '12' is not possible. In binary, 1 is equivalent to the decimal number 1; '10' is equivalent to 2, and '11' is equivalent to 3.
4. What number will not appear in the following pattern? 2, 3, 5, 7, 11, 13, 17...?

Answer: 45

These are prime numbers; defined as numbers that can only be divided evenly by themselves and 1. The number 45 is divisible by both 9 and 5 and is therefore not a prime.
5. Which number does not appear if the following pattern is continued: 1, 3, 6, 10, 15, ...?

Answer: 48

This is the pattern of triangular numbers. These numbers are generated by the formula x = n(n+1)/2; or simply by adding one more than the previous addition performed. Interestingly, 36 is both a square and a triangular number.
6. Is it correct that the number 144 does NOT appear in the number pattern 1, 8, 27, 64, ...?

Answer: Yes

These numbers are cubes (1x1x1=1; 2x2x2=8; 3x3x3=27; and so on). The next numbers are therefore 5 cubed (125) and 6 cubed (216).
7. Which number would NOT appear if the following pattern was continued? 3, 5, 9, 17, 33, ...?

Answer: 64

The pattern is 2 to the power of n, plus 1. Another (probably simpler) way to continue the pattern is to add double what you added previously to get the next number. So the progression from 17 to 33 achieved by adding 16; therefore the next number is found by adding 32 (to get 65...not 64), then you add 64 to get 129; 128 to get 257 and finally 256 to get 513.
8. Let's look at a descending pattern now. Which number does NOT appear in the following pattern: 1, 0.5, 0.25, 0.125, ...?

Answer: 0.0167

The pattern is simply achieved by halving each number to get the next. You'll notice that after the first number (1), all solutions end with a 5. Starting with one, we get half (0.5), followed by one-quarter (0.25), one-eighth (0.125), one-sixteenth (0.0625), one thirty-second (0.03125) and so on, till you hit one-one-twenty-eighth (0.0078125).

The incorrect option was one-sixtieth (0.0167).
9. Which number does NOT fit the following pattern: 1, 1, 2, 1.414, 3, 1.732, 4, 2, ...?

Answer: 3.416

The pattern is each integer followed by its square root (rounded to 3 decimal places). So 5 obviously fits (being an integer), as does 2.236 (rounded square root of 5) and 2.828 (rounded square root of 8). The square of 3.416 comes to about 11.67 and therefore it would not appear.
10. Finally let's have a look at a binary pattern. From the following pattern, which of the following numbers would NOT appear in the first 10 elements: 1, 10, 11, 100, 101, ...?

Answer: 1100

The pattern is simply 1 to 10 in binary form. Decimal numbers can be calculated from binary by taking the far right digit as units; the next digit to the left as a multiple of 2; the next as a multiple of 4; and so on. Therefore 110 = (0x1) + (1x2) + (1x4) = 6. 111 is (1x1) + (1x2) + (1x4) = 7. 1001 = (1x1) + (0x2) + (0x4) + (1x8) = 9.

The odd one out is 1100, as it comes to (0x1) + (0x2) + (1x4) + (1x8) = 12. Once you know it, as they say, binary is 'as easy as 1, 10, 11'!
Source: Author timence

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