Directions (Q1 - Q3): For the given number series, find what will come in place of the
Q 1.2 10 50? 1250 6250
1. 125
2.450
3. 100
4.250
5. 150
Answers
Answer:
please mark me as brain list and thanks all answer please
Step-by-step explanation:
Enter a problem...
Algebra Examples
Popular Problems Algebra Find the 8th Term 2 , 10 , 50 , 250 , 1250 , 6250
2
2 ,
10
10 ,
50
50 ,
250
250 ,
1250
1250 ,
6250
6250
This is a geometric sequence since there is a common ratio between each term. In this case, multiplying the previous term in the sequence by
5
5 gives the next term. In other words,
a
n
=
a
1
⋅
r
n
−
1
an=a1⋅rn-1.
Geometric Sequence:
r
=
5
r=5
This is the form of a geometric sequence.
a
n
=
a
1
r
n
−
1
an=a1rn-1
Substitute in the values of
a
1
=
2
a1=2 and
r
=
5
r=5.
a
n
=
(
2
)
⋅
(
5
)
n
−
1
an=(2)⋅(5)n-1
Remove parentheses.
a
n
=
2
⋅
5
n
−
1
an=2⋅5n-1
Substitute in the value of
n
n to find the
n
nth term.
a
8
=
2
⋅
5
(
8
)
−
1
a8=2⋅5(8)-1
Subtract
1
1 from
8
8.
a
8
=
2
⋅
5
7
a8=2⋅57
Raise
5
5 to the power of
7
7.
a
8
=
2
⋅
78125
a8=2⋅78125
Multiply
2
2 by
78125
78125.
a
8
=
156250
a8=156250