For an A.P. if a25 - a20 = 45, then d equals to:
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The common difference of the A.P. \(\frac{1}{{2b}} \frac{{1 - 6b}}{{2b}} \frac{{1 - 12b}}{{2b}}\) . . . . . is
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2
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15th term of A.P., x - 7, x - 2, x + 3, ........ is
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3
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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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4
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What is the sum of all 3 digit numbers that leave a remainder of '2' when divided by 3?
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5
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If an A.P. has a = 1, tn = 20 and sn = 399, then value of n is :
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6
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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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7
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Find the nth term of the following sequence :
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8
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The number of terms of the A.P. 3, 7, 11, 15, ....... to be taken so that the sum is 406 is
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9
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If k, 2k – 1 and 2k + 1 are three consecutive terms of an AP, the value of k is
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10
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Which term of the A.P. 92, 88, 84, 80, ...... is 0?
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