(b) 52
2. A certificate of pedigree lists a dog's parents, grandparents, and so on. The power (2)6 describes the
number of great-great-great-great grandparents a dog has, How many is this?
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Answer:
Found this answer from somewhere
Step-by-step explanation:
We have; a2 = 14, a3 = 18 and n = 51
Here;
a
3
–
a
2
=
18
–
14
=
4
Hence,
d
=
4
Or,
a
2
–
a
=
4
Or,
14
–
a
=
4
Or,
a
=
10
Now, sum can be calculated as follows:
S
=
n
2
[
2
a
+
(
n
−
1
)
d
]
=
51
2
(
2
×
10
+
50
×
4
)
=
51
(
10
+
50
×
2
)
=
51
×
110
=
5610
Thus, sum = 5610
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