Find the next number in the series: 73, 90, 109, 130, 153, ?
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178 is the next number because Square numbers with +9; next is (13)² + 9 = 178.
English • series
Last updated on 2026-02-07
Three 10-question bundles from our Reasoning Series quiz library.
Bundle 1
Bundle ID: 9002000016
Find the next number in the series: 73, 90, 109, 130, 153, ?
Score: 0 / 10Pick an answer —
178 is the next number because Square numbers with +9; next is (13)² + 9 = 178.
Find the next number in the series: 15, 18, 21, 24, 27, ?
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30 is the next number because Adds 3 each step; 27 + 3 = 30.
Find the next number in the series: 51, 66, 83, 102, 123, ?
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146 is the next number because Square numbers with +2; next is (12)² + 2 = 146.
Find the next number in the series: 4, 8, 12, 16, 20, ?
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24 is the next number because Adds 4 each step; 20 + 4 = 24.
Find the next number in the series: 44, 57, 72, 89, 108, ?
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129 is the next number because Square numbers with +8; next is (11)² + 8 = 129.
Find the next number in the series: 10, 15, 20, 25, 30, ?
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35 is the next number because Adds 5 each step; 30 + 5 = 35.
Find the next number in the series: 26, 37, 50, 65, 82, ?
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101 is the next number because Square numbers with +1; next is (10)² + 1 = 101.
Find the next number in the series: 16, 22, 28, 34, 40, ?
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46 is the next number because Adds 6 each step; 40 + 6 = 46.
Find the next number in the series: 23, 32, 43, 56, 71, ?
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88 is the next number because Square numbers with +7; next is (9)² + 7 = 88.
Find the next number in the series: 5, 7, 9, 11, 13, ?
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15 is the next number because Adds 2 each step; 13 + 2 = 15.
Bundle 2
Bundle ID: 9002000017
Find the next number in the series: 9, 16, 25, 36, 49, ?
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64 is the next number because Square numbers with +0; next is (8)² + 0 = 64.
Find the next number in the series: 11, 14, 17, 20, 23, ?
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26 is the next number because Adds 3 each step; 23 + 3 = 26.
Find the next number in the series: 87, 106, 127, 150, 175, ?
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202 is the next number because Square numbers with +6; next is (14)² + 6 = 202.
Find the next number in the series: 17, 21, 25, 29, 33, ?
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37 is the next number because Adds 4 each step; 33 + 4 = 37.
Find the next number in the series: 76, 93, 112, 133, 156, ?
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181 is the next number because Square numbers with +12; next is (13)² + 12 = 181.
Find the next number in the series: 6, 11, 16, 21, 26, ?
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31 is the next number because Adds 5 each step; 26 + 5 = 31.
Find the next number in the series: 54, 69, 86, 105, 126, ?
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149 is the next number because Square numbers with +5; next is (12)² + 5 = 149.
Find the next number in the series: 12, 18, 24, 30, 36, ?
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42 is the next number because Adds 6 each step; 36 + 6 = 42.
Find the next number in the series: 47, 60, 75, 92, 111, ?
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132 is the next number because Square numbers with +11; next is (11)² + 11 = 132.
Find the next number in the series: 18, 20, 22, 24, 26, ?
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28 is the next number because Adds 2 each step; 26 + 2 = 28.
Bundle 3
Bundle ID: 9002000018
Find the next number in the series: 29, 40, 53, 68, 85, ?
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104 is the next number because Square numbers with +4; next is (10)² + 4 = 104.
Find the next number in the series: 7, 10, 13, 16, 19, ?
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22 is the next number because Adds 3 each step; 19 + 3 = 22.
Find the next number in the series: 26, 35, 46, 59, 74, ?
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91 is the next number because Square numbers with +10; next is (9)² + 10 = 91.
Find the next number in the series: 13, 17, 21, 25, 29, ?
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33 is the next number because Adds 4 each step; 29 + 4 = 33.
Find the next number in the series: 12, 19, 28, 39, 52, ?
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67 is the next number because Square numbers with +3; next is (8)² + 3 = 67.
Find the next number in the series: 2, 7, 12, 17, 22, ?
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27 is the next number because Adds 5 each step; 22 + 5 = 27.
Find the next number in the series: 90, 109, 130, 153, 178, ?
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205 is the next number because Square numbers with +9; next is (14)² + 9 = 205.
Find the next number in the series: 8, 14, 20, 26, 32, ?
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38 is the next number because Adds 6 each step; 32 + 6 = 38.
Find the next number in the series: 66, 83, 102, 123, 146, ?
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171 is the next number because Square numbers with +2; next is (13)² + 2 = 171.
Find the next number in the series: 14, 16, 18, 20, 22, ?
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24 is the next number because Adds 2 each step; 22 + 2 = 24.
How should I use these quizzes?
Skim the questions once, then answer without overthinking. After each bundle, reflect on why the correct answer fits best.
Can I replay a bundle?
Yes. Use the Play Quiz button to redo any bundle and watch for new explanations you may have missed.
Do the flash cards match the quizzes?
Yes. Each flash card set mirrors the same questions so you can drill answers quickly.
What if I only have five minutes?
Pick one bundle and run through it. Ten focused questions give a solid micro-practice session.
Will harder sets arrive?
We regularly publish fresh bundles across easy, medium, and hard levels. Check back often.
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