Let a1.a2.a3, … , a10 be in G.P. with ai > 0 for i=1, 2, ……, 10 and S be the set of pairs (r, k), r, k∈N(the set of natural number) for which
=0 Then the number of elements in S, is :
(a)
Infinitely many
(b)
4
(c)
10
(d)
2
Let a1.a2.a3, … , a10 be in G.P. with ai > 0 for i=1, 2, ……, 10 and S be the set of pairs (r, k), r, k∈N(the set of natural number) for which
=0 Then the number of elements in S, is :
(a)
Infinitely many
(b)
4
(c)
10
(d)
2
Question ID - 56874 | SaraNextGen Top Answer
Let a1.a2.a3, … , a10 be in G.P. with ai > 0 for i=1, 2, ……, 10 and S be the set of pairs (r, k), r, k∈N(the set of natural number) for which
=0 Then the number of elements in S, is :
(a)
Infinitely many
(b)
4
(c)
10
(d)
2
|
Let a1.a2.a3, … , a10 be in G.P. with ai > 0 for i=1, 2, ……, 10 and S be the set of pairs (r, k), r, k∈N(the set of natural number) for which
|
|||
|
(a) |
Infinitely many |
(b) |
4 |
|
(c) |
10 |
(d) |
2 |
1 Answer
127 votes
Answer Key / Explanation : (a) -
Apply
C3→C3−C3
C2→ C2−C1
We get D=0
Option (a)
127 votes
Answer Link
127