Question

6 के प्रथम 10 गुणजों का योगफल ज्ञात कीजिए।
Find the sum of first 10 multiples of 6.​

Answer 1

Sum of numbers in a Sequence =

$s \: nth \: = n(a1 + an ) \div 2$

Where,N is the number of terms in sequence,a1 is The first term,an is the last term.

So,N=10

a1=6

an=60

Applying the formula

S nth =10(6+60)/2

=>10 x 66/2

=>10 x 33

=>330.

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