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2152.3. Amplitude

Write the correct answer!

Lotteries "lucky" numbers are {3; 7; 18; 26; 31; 47}. A curious scientist analyses this sequence. Write members amount in this sequence, calculate sum, average arithmetic and amplitude.
Members:
Sum:
Average arithmetic:
Amplitude:
Grade:
8
Subject
Algebra
Theme
Statistic elements
Subtheme
Amplitude