I bet you're curious to see the answers to those "fun" sequences!
Questions (Numbers)
1) 2, 4, __, 8, 10
2) 5, 10, 15, __, 25
3) __, 90, 80, 70, 60
4) 1, 3, 5, 7, __
5) 10, 20, 40, __, 160
6) 1, 4, 9, 16, __
7) __, 3, 5, 8, 12
8) 2, __, 8, 16, 32
9) 10, 11, 13, __, 20
10) 80, 40, 20, 10, __
11) 1, 1, 2, 3, __
12) 2, 3, __, 7, 11
13) 1, __, 6, 24, 120
14) 10, 15, 12, 17, __
15) 1, 8, 27, __, 125
16) 77, 49, 36, 18, __
17) 3, 3, 5, 4, __
18) 1, 11, __, 1211, 111221
19) 0, 3, 8, __, 24
20) 8, 5, 4, 9, __
Answers (Numbers)
1) 6 (even numbers
2) 20 (multiples of 5)
3) 100 (countdown of 10)
4) 9 (odd numbers)
5) 80 (each number is the previous number multiplied by 2)
6) 25 (squared numbers)
7) 2 (+1, +2, +3…)
8) 4 (powers of 2)
9) 16 (+1, +2, +3…)
10) 5 (each number is the previous number divided by 2)
11) 5 (Fibonacci sequence)
12) 5 (prime numbers)
13) 2 (factorials)
14) 14 (alternating +5, -3)
15) 64 (cubes)
16) 8 (7 x 7 = 49, 4 x 9 = 36, 3 x 6 = 18, 1 x 8 = 8)
17) 4 (the number of letters in each English word, “one” = 3, “two” = 3, and so on)
18) 21 (the look-and-say sequence, two 1s)
19) 15 (n^2 – 1)
20) 1 (numbers in alphabetical order)
Questions (Words)
1) apple, banana, cherry, dragonfruit, ____
2) small, ____, large, extra large
3) ____, Wednesday, Friday, Sunday
4) A, CCC, ____, GGGGGGG, IIIIIIIII
5) January, March, May, July, ____
6) I, me, all, five, ____
7) act, bat, ____, dot, eat
8) acai, apple, apricot, avocado, ____
9) deer, reed, tool, loot, step, ____
10) ____, ninth, eighth, seventh, sixth
11) red, orange, ____, green, blue
12) north, east, south, ____
13) A, ____, I, O, U
14) one, two, three, zero, ____
15) A, S, D, F, ____
16) Sun, Mon, Tues, ___, Thurs
17) ape, bra, case, drift, ____
18) no, on, rate, etar, tool, ____
19) racecar, madam, ____, level, mom
20) done, effort, flourish, great, ____
Answers (Words)
1) elderberry (alphabetical fruits)
2) medium (size progression)
3) Monday (every other day of the week)
4) EEEEE (next odd letter repeated the next odd number times)
5) September (every other month)
6) Seven (basically any word with 5 letters would work, but it’s a progression of the number of letters)
7) Cat (3 letter words in alphabetical order)
8) Ambarella (fruits starting with “a” increasing in length)
9) Pets (palindromic pairs)
10) Tenth (countdown of ordinal numbers)
11) Yellow (colours of the rainbow ROYGBIV)
12) West (cardinal directions clockwise)
13) E (standard vowels)
14) Five (the sequence of the last letter: e, o, e, o)
15) G (the middle row of a QWERTY keyboard)
16) Wed (days of the week)
17) eagle (or any other 5 letter word starting with e because 1st letter in sequence and length of 3, 3, 4, 5, 5)
18) loot (reversing the previous word)
19) kayak (all are palindromes in decreasing length, I also accepted other 5 letter palindromes)
20) hate (any word starting with h)
Questions (Combination)
1) 1, one, 3, three, 5, ____
2) one, ____, sixteen, 64, two hundred fifty-six
3) T1, F2, S3, S4, _____
4) 3, triangle, 4, square, 5, ______
5) 1, B, 3, D, ____
6) 1, A, 3, C, 5, ______
7) 1, A, 3, C, 6, F, 10, ____
8) Six, 3, three, ____, five
9) F1, S2, T3, F4, _____
10) 3, 5, 4, 5, 6, ____
11) S, M, H, D, ____
12) A1, E5, I9, ____, U21
13) circle, line, triangle, square, ______
14) 31, 28, 31, 30, ____
15) 1, three, 7, ______, 31
16) ___, a, d, g, j
17) T, G, ____, Y, H, N
18) lion, 2, treader, 4, ____
19) 1, chamber, 3, Azkaban, ____
20) 100, C, 50, L, 10, ____
Answers (Combinations)
1) Five (alternating between the numberal and the word for odd numbers)
2) 4 (powers of 4 alternating between word and numeral)
3) M5 (the first letter of the week followed by an in-sequence number)
4) Pentagon (the number of sides followed by the name of the polygon)
5) 5 (alternating between number and alphabet based on its “position”)
6) E (the number represents the position in the alphabet for each odd number)
7) J (the number represents the position in the alphabet increasing by 1 in gap each time +2, +3, +4)
8) 5 (the word followed by the count of the letters in that word)
9) F5 (the first letter of the ordinal number followed by the number first 1, second 2, third 3)
10) 8 (the number of letters in each prime number 2, 3, 5, 7, 11, 13)
11) W (units of time’s first letter: second, minute, hour, day, week)
12) O15 (vowels with their position in the alphabet)
13) pentagon (number of “ends” or sides)
14) 31 (the number of days each month)
15) fifteen (double the number and add 1 but alternate between number and word)
16) voicemail (the first letter on a telephone keypad on original cell phones)
17) B (on the “vertical columns” of QWERTY keyboards)
18) horse or boy (Narnia books in order alternating between a keyword from the title and the sequence of the book)
19) 5 (Harry Potter books in order alternating between a keyword from the title and the sequence of the book)
20) X (Roman numerals paired with their Arabic equivalents)
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