pls answer and solve it
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Answer:
20 days
Step-by-step explanation:
1st day 1 leaf 2nd day 2;
1+2+3+...+n = 210
n(n+1)/2 = 210
n2 + n - 420 = 0
Solve it
shifanaaz55:
any other method
Isnt it sufficient
Arithmetic progression is another
this method isn't in course
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