Question 1 :
<div><span>Check if the series is an A.P. Find the common difference $d$ and write three more terms of the the following series.</span><br/></div>$2,\displaystyle\frac{5}{2}$, $3,\displaystyle\frac{7}{2}, ...$
Question 2 :
The $4^{th}$ term of an AP is $14$ and its $12^{th}$ term is $70$. What is its first term?
Question 3 :
Find $15^{th}$ term of the A.P. : 2, 5, 8, ........
Question 4 :
Constant is subtracted from each term of an A.P. the resulting sequence is also an ______
Question 6 :
<span>Write the first three terms of the AP when a and d are as given below:</span><div><br/></div><div>$a=\sqrt{2}, d=\dfrac{1}{\sqrt{2}}$<br/>then first three terms are $\sqrt{2},\dfrac{3}{\sqrt{2}},\dfrac{4}{\sqrt{2}}$<br/></div>
Question 7 :
If a,b,c are distinct and the roots of (b-c) $x^{2}$ + (c-a) x + (a-b) = 0 are equal ,then a,b,c are in
Question 8 :
How many natural numbers between 200 and 400 are there which are divisible by<br>i Both 4 and 5?<br>ii 4 or 5 or 8 or 10?
Question 10 :
<span>State the following statement is True or False</span><div>Progression means increment of quantity in a particular pattern. Is the statement true or false?<br/></div>
Question 11 :
If $3 + 5 + 7 + 9 +$ ... upto $n$ terms $= 288$, then $n =$ ____
Question 13 :
Let $S_{n}$ denotes the sum of first $n$ terms of an AP. If $S_{4} = -34, S_{5} = -60$ and $S_{6} = -93$, then the common difference and the first term of the AP are respectively.
Question 16 :
Find the common difference, if $a_2 = 10$ and $a_5 = 20$.
Question 17 :
If $ \log_e 5 , \log_e ( 5^x - 1) $ and $ \log_e \left( 5^x - \dfrac {11}{5} \right) $ are in $AP,$ then the values of $x$ are :
Question 18 :
Write first four terms of the AP, when the first term $a$ and the common difference $d$ are given as follows $a = -1.25, d = -0.25.$
Question 20 :
<div><span>Say true or false.</span><br/></div>The amount of Rs $10,000$ with intrest of $5\%$ is paid in installments every month of $950, 900, 850, 800, ..... 50.$ The installments represents an $A.P.$
Question 21 :
The fourth term of an A.P. is $11$ and the eighth term exceeds twice the fourth term by $5$. Find the A.P. and the sum of first $50$ terms.
Question 22 :
Assertion: $1111.... 1$(up to $90$ terms) is a prime number.
Reason: If $\displaystyle \frac {b+c-a}{a}, \frac {c+a-b}{b}, \frac {a+b-c}{c}$ are in $A.P.,$ then $\displaystyle \frac {1}{a}, \frac {1}{b}, \frac {1}{c}$ are also in $A.P.$
Question 23 :
The $8^{th}$ term of the sequence $1, 1, 2, 3, 5, 8, ....$ is
Question 25 :
If $s_{n}=n^{2}p+\displaystyle \frac{n(n-1)}{4}q$ be the sum to $'n'$ terms of an A.P., then the common difference of the A.P. is <br>