Find a,b and c such that a,7,b,23,c are ap
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Answered by
6
7-a=b-7
a+b=14 ( 1) similarly a+c=30 (2)
substitute 1 in 2
c-b=16
b+c=46
2c=62
c=31
d=31-23=8 so b=15
and a=-1
there are other complex methods but this is easier to understand
a+b=14 ( 1) similarly a+c=30 (2)
substitute 1 in 2
c-b=16
b+c=46
2c=62
c=31
d=31-23=8 so b=15
and a=-1
there are other complex methods but this is easier to understand
Answered by
10
7-a=b-7=23-b=c-23
on equating, b-7=23-b
2b=30
b=15
on equating, 7-a=b-7
7-a=8
a=-1
on equating, 23-b=c-23
c=46-15
c=31
on equating, b-7=23-b
2b=30
b=15
on equating, 7-a=b-7
7-a=8
a=-1
on equating, 23-b=c-23
c=46-15
c=31
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