21.
Find the ratio between the 4th and 8th terms of the sequence defined by a(n)=(-1)n n3
- A.3:5
- C.1:8
- B.5:3
- D.8:1
- Answer
- Report
Answer : [C]
22.
Determine the rth term of an A.P. whose 6th term is 12 and 8th term is 22
- A.3r-7
- C.2r-6
- B.5r-18
- D.5r-9
- Answer
- Report
Answer : [B]
23.
If pth term of an A.P is q the qth term is p, Find its term
- A.p+q-r
- C.-p+q+r
- B.-r+p+q
- D.pq+r
- Answer
- Report
Answer : [A]
24.
If 7 times the 7th term of an A.P is equal to 11 times its eleventh term, find the 18th term of the A.P.
- A.0
- C.6
- B.5
- D.3
- Answer
- Report
Answer : [A]
25.
Determine k so that k+2,4k-6 and 4k-2 are the three consecutive terms of an A.P
- A.2
- C.8
- B.4
- D.-4
- Answer
- Report
Answer : [B]
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