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The number of terms common to two A.P.'s...

The number of terms common to two A.P.'s
3,7,11,`"………..",`407 and 2,9,16,`"………"`709 is `:`

A

14

B

21

C

28

D

None of these

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The correct Answer is:
A
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MODERN PUBLICATION-SEQUENCES AND SERIES -MCQ ( Level-II)
  1. The 10th common term between the series : 3+7+11+"……." and 1+ 6 + 1...

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  2. The number of terms common to two A.P.'s 3,7,11,"………..",407 and 2,9...

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  3. Let S(n) denote the sum of first n terms of an A.P. If S(2n) = 3S(n), ...

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  4. Consider an A.P. with first term 'a' and common difference 'd'. Let S(...

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  5. If S(1), S(2) and S(3) denote the sum of first n(1) , n(2) and n(3) te...

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  6. In the sequence 1,2,2,3,3,3,4,4,4,4"…….." where n consecutive terms ha...

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  7. It is given that (1)/( 1^(4) ) + ( 1)/( 2^(4)) + ( 1)/( 3^(4)) +"........

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  8. If A.M. and G.M. of x and y are in the ration p: q, then x:y is :

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  9. Let ( a(n) ) be a G.P. such that ( a(4))/( a(6)) =( 1)/( 4) and a(2) +...

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  10. An A.P. consists of n ( odd terms ) and its middle term is m. Then the...

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  11. If a,b,c are the sides of a Delta ABC, which are in A.P.,then cot"" ( ...

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  12. If S denotes the sum to infinity and S(n), the sum of n terms of the s...

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  13. 1^(2) + 1+ 2^(2) + 2 + 3^(2) + 3+"............"+n^(2) + n is equal to...

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  14. If H is the haromonic mean between P and W, then ( H)/( P ) + ( H)/( Q...

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  15. In ( m+1)th, ( n + 1) th, ( r + 1) th terms of an A.P. are in G.P. an...

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  16. If a, b, c are in A.P., p, q, r are in HP and ap, bq, cr are in GP, th...

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  17. If a ,b,c are in H.P., then correct statement is :

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  18. If ( a(2)a(3))/( a(1) a(4)) = ( a(2) + a(3))/( a(1) + a(4) ) = 3 ((a(2...

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  19. The sum of the products of the ten numbers : +-1,+-2,+-3,+-4,+-5, ta...

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  20. If n is an odd integer greater than or equal to 1, then the value of :...

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