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Sum of n Terms

Sonam keeps a...

Question

Sonam keeps a chart of how many kms she runs each day.
If the pattern continues, how many days will Sonam take to run $6$ kms ?

A

17 days

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B

19 days

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C

18 days

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D

20 days

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Solution

The correct option is B 19 days
Sonam increasing $\frac{1}{4}$ km every day
So 3 rd day she will reach 2 km, 7 day she will reach 3 km, 11th day she will reach 4 km, 15th day she will reach 5 km , 19th day she will reach 6 km.

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