Which term of the A.P. 84, 80, 76, ... is 0? - Vidyadip

Question

Which term of the A.P. 84, 80, 76, ... is 0?

✓

Answer

Which term of A.P. 84, 80, 76, is 0? Let $n^{th}$ term of A.P.be 0 Then, $\text{a}_\text{n}=0=\text{a}+(\text{n}-1)\text{d}$ $\text{a}_\text{n}=0=84+(\text{n}-1)(-4)$ $\therefore\text{n}=22$ $\therefore$ 22nd term of the given A.P. is 0.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "(Each question 2 marks)" from Arithmetic Progressions→Arithmetic Progressions — all question types→MATHS STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

Solve the following system of linear inequalities graphically.

x + y ≥ 5
x - y $\le$ 3

Find the general solutions of the following equations: $\tan\text{x}=-\frac{-1}{\sqrt{3}}$

Solve the following system of equations in R. $4\text{x}-1\leq0, \ 3-4\text{x}>0$

If $f: R \rightarrow R$ be defined by $f(x)=x^2+1$, then find $f^{-1}\{17\}$ and $f^{-1}\{-3\}$.

Find the conjugates of the following complex numbers: $\frac{(3-2\text{i})(2+3\text{i})}{(1+2\text{i})(2-\text{i})}$

Given 4 flags of different colours, how many different signals can be generated, if a signal requires the use of 2 flags one below the other?

Determine the domain and range of the following relations:

$\text{S}=\{(\text{a, b}):\text{b}=|\text{a}-1|,\text{ a}\in\text{Z and |a|}\leq3\}$

Two balls are drawn at random from a bag containing 2 white, 3 red, 5 green and 4 black balls, one byb one without, replacement. find the probability that both the ballsw are of different colours.

Prove that: $\sqrt{2+\sqrt{2+2\cos4\text{x}}}=2\cos\text{x},0\cos\text{x},<\text{x}<\frac{\pi}{4}$

Differentiate the following function with respect to $(\text{x})$:$(2\text{x}^2+1)(3\text{x}+2)$