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Random Cumulative Number quiz 1 to x ?

In this quiz the answers change every time you play! Given a random number, qive the cummulative of that number from 1 eg. given '4' the answer would be '10'...... ie 1 + 2 + 3 + 4 = 10 If stuck move yellow box manually:
Answer must correspond to highlighted box!
Hint: (n*(n+1))/2 ......... or .......... n*1/2n + 1/2n
Quiz by Malbaby
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Last updated: September 11, 2020
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First submittedSeptember 11, 2020
Times taken9
Average score80.0%
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