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 18th and 11th term of an A.P. are in the ratio 3 : 2, then its 21st and 5th terms are in the ratio
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2
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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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3
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If the sum of n terms of an A.P. is 3n2 + 5n then which of its terms is 164 ?
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4
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After striking the floor, a rubber ball rebounds to 4/5th of the height from which it has fallen. Find the total distance that it travels before coming to rest if it has been gently dropped from a height of 120 metres.
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5
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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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6
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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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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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If the first term of an A.P. is 2 and common difference is 4, then the sum of its 40 term is
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9
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(1) + (1 + 1) + (1 + 1 + 1) + ....... + (1 + 1 + 1 + ...... n  1 times) = ......
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10
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For A.P. T18  T8 = ........ ?
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