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Maths TNSB Mentoring
Class 10 Crash course
Numbers and Sequences
Annual Revision V
5.
TBQ - Find the unknown value
Question:
2
m.
Find \(z\) so that \(z + 6\), \(z + 9\) and \(z + 15\) are consecutive terms of a geometric progression.
Answer
:
Which among the following is true for geometric progression?
t
3
t
1
=
t
3
t
2
t
2
t
1
=
t
3
t
2
t
1
t
2
=
t
2
t
3
t
2
t
3
=
t
1
t
2
The value of \(z\) is:
−2
3
−3
1
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