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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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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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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3
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A bacteria gives birth to two new bacteria in each second and the life span of each bacteria is 5 seconds. The process of the reproduction is continuous until the death of the bacteria. initially there is one newly born bacteria at time t = 0, the find the total number of live bacteria just after 10 seconds :
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Sum of n terms of the series \(\sqrt 2 + \sqrt 8 + \sqrt {18} + \sqrt {32} + \) ....... is
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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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If the sums of n terms of two arithmetic progressions are in the ratio \(\frac{{3n + 5}}{{5n + 7}}\) then their nth terms are in the ration
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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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Find the nth term of the following sequence :
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9
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How many 2-digit positive integers are divisible by 4 or 9?
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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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