Three numbers are in A. P. The difference between the first and the last is 8 and the
product of these two is 20. Find the numbers.
that the sequence is an Ap
Answers
Answered by
0
Answer:
Step-by-step explanation:
D=4
A=6
So sequence is 2,6,10
Answered by
0
Answer:
10, 6, 2
Step-by-step explanation:
let d be the common difference
let a be the first term of AP
let 3 numbers be (a-d), a, (a+d)
(a-d)-(a+d)= 8
a-d-a-d= 8
-2d= 8
d= -4 ----- 1
(a-d)×(a+d)= 20
a²+ad-ad-d²= 20 (sub. value of d from equation 1)
a²- 16= 20
a²= 36
a=6
AP series:
d= -4, a= 6
a-d= 6-(-4)
= 10
a= 6
a+d= 6+(-4)
= 2
Hence AP series is 10, 6, 2
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