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Question 1. Asked on :24 August 2019:09:15:05 PM

#### Find the sum of n terms of A.P. 2+4+6+...... .

-Added by Prince Rawat Mathematics » Arithmetic Progressions

Master Purushottam

Step-by-step explanation:

Let a be the first term and d the common difference

a=2

d=4-2=2

So, 15th term= a+(15-1)*d

=2+(14*2)

=2+28

=30

Sum of first 15 terms = n/2(a+an), where n= number of terms

=15/2(2+30)

=15/2(32)

=15*16

=240

-Answered by Master Purushottam On 24 August 2019:09:17:25 PM(5899Average Rating Based on rating)

Akki chauhan

Step-by-step explanation:

Let a be the first term and d the common difference

A=2

D=4-2=2

So, 15th term=a+(15-1)*d

=2+(14*2)

2+28

=30

Sum of first 15 term=

n/2(a+an),where n=number

of terms.

=15/2(2+30)

=15/2(32)

=15*16

=240

-Answered by Akki chauhan On 24 August 2019:09:27:13 PM(5929Average Rating Based on rating)

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