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The first 3 terms of the sequence a_{n} = n+1/n+2 is

(A)

5/4, 4/3, 3/2

(B)

2/3, 3/4, 4/5

(C)

4/5, 3/4, 2/3

(D)

4, 3, 2

Question-2

Which terms of the G.P 2, 2√2, 4,........ is 128?

(A)

12

(B)

13

(C)

14

(D)

15

Question-3

The n^{th} term of G.P 5, 25, 125 is

(A)

5^{n}

(B)

5^{n-1}

(C)

5^{n+1}

(D)

n^{5}

Question-4

Which term of the G.P, 2, 8, 32.......... up to n term is 131072?

(A)

8^{th} term

(B)

9^{th} term

(C)

7^{th} term

(D)

6^{th}term

Question-5

The income of a person is 3,00,000 in the first year and he receives an increase of Rs. 10,000 to his income per year for the next 19 years. Then the total amount, he received in 20 years is

(A)

80,00,000

(B)

79,00,000

(C)

78,00,000

(D)

69,00,000

Question-6

If G is geometric mean of numbers a and b then G =

(A)

√ab

(B)

±√ab

(C)

ab

(D)

a/b

Question-7

How many terms of the G.P 3, 3/2, 3/4......... are needed to give the sum 3069/512?

(A)

10

(B)

11

(C)

9

(D)

8

Question-8

The number of terms of the A.P 3, 7, 11, 15--- to be take so that the sum is 406

(A)

5

(B)

10

(C)

12

(D)

14

Question-9

Given a_{n} = (n+1)^{2}/n then a_{7} is

(A)

64

(B)

67

(C)

49/8

(D)

64/7

Question-10

1 + 2 + 3 +........30 =

(A)

465

(B)

930

(C)

900

(D)

500

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