Download App

Sequences and Series — Maths STD 11 Science — Question

CBSE BoardEnglish MediumSTD 11 ScienceMathsSequences and Series2 Marks
Question
Find the indicated terms of the sequence, whose nth term is $a_n = 4n - 3; a_{17}, a_{24}.$
✓

Answer

We have, $a_n = 4n - 3$
On putting $n = 17,$ we get
$a_{17} = 4 \times 17 - 3 = 68 - 3 = 65$
On putting $n = 24$, we get
$a_{24} = 4 \times 24 - 3 = 96 - 3 = 93$

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 "2 Marks Questions" from Sequences and Series→Sequences and Series — all question types→Maths STD 11 Science question papers→CBSE Board STD 11 Science question papers→CBSE Board question paper generator→

Similar questions

Find the derivative of function $\frac{{p{x^2} + qx + r}}{{ax + b}}$ (it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers).
→
Evaluate: $\lim _{\theta \rightarrow 0} \frac{1-\cos 4 \theta}{1-\cos 6 \theta}$.
→
If $A=\{a, b, c, d, e\}, B=\{a, c, e, g\}$ and $C=\{b, e, f, g\},$ verify that : $(A \cap B) \cap C=A \cap(B \cap C)$
→
Find the real values of x and y, if
$(\text{x}+\text{iy})(2-3\text{i})=4+\text{i}$
→
Evaluate $\mathop {\lim }\limits_{x \to 3} \frac{{{x^4} - 81}}{{2{x^2} - 5x - 3}}$
→
Evaluate the following limit:
$\lim\limits_{\text{x}\rightarrow0}\frac{\text{x}\cos\text{x}+\sin\text{x}}{\text{x}^2+\tan\text{x}}$
→
Find the value of the following trigonomentric ratio:
$\text{cosec}\Big(-\frac{20\pi}{3}\Big)$
→
If $\text{f(x)}=\frac{2\text{x}}{1+\text{x}^2},$ show that $\text{f}(\tan\theta)=\sin2\theta$
→
Show the following quadratic equation:
$x^2− (5 − i) x +(18 + i) = 0$
→
Evaluate $\mathop {\lim }\limits_{x \to 0} \frac{{\cos 2x - 1}}{{\cos x - 1}}$
→