Math, asked by shifanaaz55, 10 months ago

pls answer and solve it

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Answered by hameyafeme

0

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

hameyafeme: Isnt it sufficient

hameyafeme: Arithmetic progression is another

shifanaaz55: this method isn't in course

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