Math, asked by poojagosavi975, 6 months ago

the sum of all natural numbers between 1 to 70 divisible by 7??

Answers

Answered by sv24437

1

Answer:

385

Step-by-step explanation:

series is like 7, 14, 21 , 28 , 35 ......

last term will be 70

it is a AP series with difference 7 and first term 7

sum of AP = n/2 ( a +l)

385

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