The number of terms of the A.P. 3, 7, 11, 15, ....... to be taken so that the sum is 406 is
5
10
12
14
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1
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If a + 1, 2a + 1, 4a - 1 are in A.P., then the value of a is:
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2
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If the sum of n terms of an A.P. be 3n2 + n and its common difference is 6, then its first term is
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3
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Which term of the A.P. 24, 21, 18, ............ is the first negative term?
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4
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The 2nd and 6th term of an arithmetic progression are 8 and 20 respectively. What is the 20th term?
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5
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The 3rd and 7th term of an arithmetic progression are -9 and 11 respectively. What is the 15th term?
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6
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The 4th and 7th term of an arithmetic progression are 11 and -4 respectively. What is the 15th term?
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7
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The 7th and 21st terms of an AP are 6 and -22 respectively. Find the 26th term
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8
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If a + 1, 2a + 1, 4a - 1 are in A.P., then the value of a is:
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9
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The nth term of an A.P., the sum of whose n terms is Sn, is
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10
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The 2nd and 6th term of an arithmetic progression are 8 and 20 respectively. What is the 20th term?
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