Fast Math: 1+2+3...

Start with one. The next number added is one more than the number before.
Example: If you started with two, then you would add three to make five, then four to make nine, then five and so on
Quiz by
KiloNova
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Last updated: July 30, 2024
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First submittedJuly 30, 2024
Times taken102
Average score46.7%
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This beats or equals % of test takers also scored 100%
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Hint
Answer
Start with 1
1
add 2...
3
add 3...
6
add 4...and so on
10
15
21
28
36
45
55
66
78
91
105
120
Keep going!
136
153
171
190
210
231
253
276
300
325
351
378
406
435
465
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6 Comments
+1
Level 36
Jul 30, 2024
grrr i hate math XD
+1
Level 62
Jul 30, 2024
Society is ashamed of you.
+1
Level 45
Aug 4, 2024
Scoring

You scored 22/30 = 73%

This beats or equals 100% of test takers

The average score is 12

Your high score is 22

I am so confused.

+1
Level 62
Aug 4, 2024
Wdym?
+1
Level 62
Aug 9, 2024
Simple but effective
+1
Level 60
Nov 15, 2024
nice quiz