Sequences and Series - Online Test

Q1. If the numbers a,b,c,d,e are in A.P then find the value of a-4b+6c-4d+e
Answer : Option A
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Q2.

If a, b, c, d , e are in G. P., then  equals


Answer : Option D
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Q3. The product of first n odd terms of a G.P. whose middle term is m is
Answer : Option C
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Q4. The fourth term of a G. P. is 2, then product of first 7 terms is
Answer : Option B
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Q5. If three positive numbers a, b, c are in G. P. then log a, log b, log c are in
Answer : Option A
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Q6. The nth term of the sequence 5 + 55 + 555 + …. is
Answer : Option B
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Q7. The sum of first three terms of a G.P. is to the sum of next three terms is 125 : 27. The common ratio of the G.P. is
Answer : Option D
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Q8. Sum of an infinitely many terms of a G.P. is 3 times the sum of even terms. The common ratio of the G.P. is
Answer : Option D
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Q9. If  be the arithmetic mean between two distinct positive reals a and b then the value of n is
Answer : Option C
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Q10. then a, b, c, d are in
Answer : Option D
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