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Greatest Term (numerically) - Practice Questions & MCQ

Edited By admin | Updated on Sep 18, 2023 18:34 AM | #JEE Main

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  • 27 Questions around this concept.

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If for some positive integer n, the coefficients of three consecutive terms in the binomial expansion of (1+x)^{n+5} are in the ratio 5:10:14, then the largest coefficient in this expansion is.

Find the numerically greatest term in the expansion of (2+3 x)^{9},  when  x=\frac{2}{3}.

The numerically greatest term in (x+y)^{20} \text { when } x=2.1, y=-2.5 \text { is }

The largest term in the expansion of  (3+2 x)^{50} \text {. where } x=\frac{1}{5} \text { is }

The largest term in the expansion of  (3+2 x)^{50} where  x=\frac{1}{5}  is

The greatest coefficient in the expansion of (1+x)^{2 n+1} \text { is }

If the sum of the coefficients in the expansion (x+y)^n is 1024, then the value of the greatest coefficient in the expansion is:

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Numerically, the greatest value of the term in the expansion of (3-5 x)^{15}, when x=1/5, is

Concepts Covered - 1

Greatest Term (numerically)

Numerically Greatest Value:

The number which has the highest modulus value is called the Numerically Greatest Value

Eg, out of 4, -7, -5, 6, 1

-7 has the Numerically Greatest Value because its mod value (=7) is the largest among all the mod values of the given numbers

 

Method to find the Numerically Greatest Term of the expansion (a + b)n

First, find the value of m which is

\mathrm{m=\frac{(n+1)}{1+\left | \frac{a}{b} \right |}}

If m is an integer, then Tm  and Tm + 1   are numerically equal and both are greatest terms.

If m is not an integer, then T[m] + 1 is the greatest term, where [m] is an integral part of m.

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Greatest Term (numerically)

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