JEE MATHEMATICS MCQ: SEQUENCE OF SERIES

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Application +4 | -1

There are 15 terms in an arithmetic progression. Its first term is 5 and their sum is 390 . The middle term is

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Correct option: B

Option B (26) is correct because the middle term of an AP with 15 terms is the 8th term, which can be calculated using the formula a + 7d.

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A=\{1,2,3\}, B=\{3,4\}, C=\{4,5,6\}

{A} \cup({B} \cap {C})

A-(B \cap C)

(B \cup C)-A

a,b,c

a,x,b

b,y,c

{x^2},{b^2},{y^2}

P(x)=1-x+x^2-x^3+\ldots+x^{2012}

y

Q(y)=a_0+a_1 y+\ldots+a_{2012} y^{2012}

y=x-2

\sum\limits_{{i=0}}^{2012} a_i

\log \left(\frac{5 c}{a}\right), \log \left(\frac{3 b}{5 c}\right)

\log \left(\frac{a}{3 b}\right)

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G P

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\frac{3}{4}