The sum of the 10 AM's between 3 and 17 is __________
Answers
Answered by
2
Answer:
20 is the right answer dear
Answered by
0
Answer:
Let , A
1
,A
2
,A
3
be the three A.M.'s between 2 and 10
such that 2,A
1
,A
2
,A
3
,10 are in A.P.
a
n
=1+(n−1)d
n=3+2=5,a=2
∴10=2+(5−1)d
∴4d=8
∴d=2
A
1
=a+d=2+2=4
A
2
=a+2d=2+4=6
A
3
=a+3d=2+6=8
∴ Sum of 4+6+8=
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