Quiz Discussion

(1) + (1 + 1) + (1 + 1 + 1) + ....... + (1 + 1 + 1 + ...... n - 1 times) = ......

Course Name: Quantitative Aptitude

  • 1]

    \(\frac{{n\left( {n + 1} \right)}}{2}\)

  • 2]

    \(\frac{{n\left( {n - 1} \right)}}{2}\)

  • 3]

    \({n^2}\)

  • 4]

    n

Solution
No Solution Present Yet

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How many terms are there in 20, 25, 30 . . . . . . 140?

  • 1] 22
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  • 3] 23
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The sum of the first 16 terms of an AP whose first term and third term are 5 and 15 respectively is

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The nth term of an A.P., the sum of whose n terms is Sn, is

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The 3rd and 9th term of an arithmetic progression are -8 and 10 respectively. What is the 16th term?

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What is the sum of all positive integers up to 1000, which are divisible by 5 and are not divisible by 2?

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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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Which term of the A.P. 24, 21, 18, ............ is the first negative term?

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Let S denotes the sum of n terms of an A.P. whose first term is a. If the common difference d is given by d = Sn – k Sn-1 + Sn-2 then k =

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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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The sum of first five multiples of 3 is:

 

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  • 2]

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  • 3]

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Solution
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