Question

find the sum of even number between 1 to 300














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Answer 1

Step-by-step explanation:

• a=2
• d=2
• n=?
• Sn=?
• An=288

An=a+(n-1)d

288=2+(n-1)2

288=2+2n-2

288/2=n

144=n

Sn=144/2[4+289]

=72(290)

=20300

Answer 2

Answer:

22650

Step-by-step explanation:

2,4,6....300

300=2+(n-1)(2)

298/2=n-1

149+1=n

n=150

5150=150/2(2(2)+149(2))

75(4+298)

75(302)

=22650