Find the nth term of the following sequence :
5(10n  1)
5n(10n  1)
\(\frac{5}{9} \times \left( {{{10}^n}  1} \right)\)
\({\left( {\frac{5}{9}} \right)^n} \times \left( {{{10}^n}  1} \right)\)
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1
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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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2
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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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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 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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What is the sum of the first 9 terms of an arithmetic progression if the first term is 7 and last term is 55?
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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 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:
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8
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What is the sum of the following series? 64, 66, 68, ......, 100
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9
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The 3^{rd} and 7^{th} term of an arithmetic progression are 9 and 11 respectively. What is the 15^{th} term?
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10
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The sum of the first and third term of an arithmetic progression is 12 and the product of first and second term is 24, then first term is
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