Question

3. Find the sum of all even numbers which
are between 12 to 25. *​

Answer 1

Answer:

114

Step-by-step explanation:

All even numbers between 12 and 25= 14,16,18,20,22,24

Their sum----->

14+16+18+20+22+24

As 19 is the median(middle term) of this series, and total numbers are 6-->

Sum = 19 x 6

Sum = 114

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Answer 2

If the numbers are counted to be even from 12,

12 + 14 + 16 + 18 + 20 + 22 + 24

= 126

If the numbers are counted to be even excluding 12,

14 + 16 + 18 + 20 + 22 + 24

= 102

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