The first term of an Arithmetic Progression is 22 and the last term is -11. If the sum is 66, the number of terms in the sequence are:
9
10
11
12
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1
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The sum of first five multiples of 3 is:
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2
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If the sum of three consecutive terms of an increasing A.P. is 51 and the product of the first and third of these terms is 273, then the third term is :
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3
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The nth term of an A.P., the sum of whose n terms is Sn, is
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4
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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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5
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The 2nd and 8th term of an arithmetic progression are 17 and -1 respectively. What is the 14th term?
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6
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How many terms are there in 20, 25, 30 . . . . . . 140?
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7
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Find the first term of an AP whose 8th and 12th terms are respectively 39 and 59.
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8
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If four numbers in A.P. are such that their sum is 50 and the greatest number is 4 times the least, then the numbers are
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9
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Which term of the A.P. 24, 21, 18, ............ is the first negative term?
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10
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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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