Question

23. Find the sum of all even numbers which are
between 12 to 25.
(A) 114
(B) 125
(C) 134
(D) 115
please I need full solution ​

Answer 1

Answer:

Hello friend u r answer is a) 114.

Step-by-step explanation:

AP - 14,16,..., 24

a = 14, l = 24 = an, d = 2

l = a+(n-1)d

24 = 14 + (n-1) 2

24-14 = (n-1) 2

10/2 = n-1

5+1 = n

n= 6

Now sum of even numbers is, n=6

S = n(a+l)/2

= 6(14 + 24)/2

= 6(38)/2

= 228/2 = 114

Answer 2

Answer:

hope this answer will help u