Suresh Lecturer

MCQ Quiz for 10th Maths

Chapter 5 Arithmetic Progression

Class 10 Mathematics Chapter 5 Arithmetic Progression AP Multiple Choice Questins Quiz / MCQ Quiz online test base on NCERT useful for NTSE Maths Olympiad Board Exam Important Questions.

2841

1. $11^{\text {th }}$ term of the A.P. $-3,-\frac{1}{2}, 2 \ldots .$. is:

-38

None of these

2859

2. If the third term of an A.P. is 12 and $10^{\text {th }}$ term is 26 , then its $20^{\text {th }}$ term is:

2845

3. The common difference of A.P. $3,1,-1,-3, \ldots .$. is:

-2

-3

2838

4. Which one is an A.P. series?

$1,2,4,8, \ldots \ldots$

$5,8,12,15, \ldots \ldots$

$3,6,9,12, \ldots \ldots$..

None of these

2840

5. $30^{\text {th }}$ term of the A.P. $10,7,4, \ldots . .$. is:

-77

None of these

2853

6. $15^{\text {th }}$ term of A.P. $\frac{1}{3}, \frac{5}{3}, \frac{9}{3}, \frac{13}{3}, \ldots . .$. is:

$\frac{61}{3}$

2857

7. If $11^{\text {th }}$ term of an A.P. is 38 and $16^{\text {th }}$ term is 73 , then its first term is:

-32

-35

2842

8. Which one is an A.P. series?

$2,4,8,12, \ldots$

$0.2,0.22,0.222, \ldots$

$-10,-6,-2,2, \ldots$

$1,3,9,27, \ldots$

2843

9. Which one is an A.P. series?

$a, a^{2}, a^{3}, \ldots$

$1^{2}, 3^{2}, 5^{2}, 7^{2}, \ldots$

$a, 2 a, 3 a, 4 a, \ldots$

$1,3,9,27, \ldots$

2839

10. Which one is an A.P. series?

$-1.2,-3.2,-5.2, \ldots \ldots$

$2,5,7,9, \ldots \ldots$

$1,2^{2}, 3^{2}, 4^{2}, \ldots \ldots$

None of these

2851

11. In an A.P.: $-10,-6,-2,2, \ldots \ldots . ., 20^{\text {th }}$ term is:

-66

2844

12. In an A.P.: $2,7,12, \ldots, 20^{\text {th }}$ term is:

-47

2858

13. $15^{\text {th }}$ term of the A.P. $5,6 \frac{1}{2}, 8,9 \frac{1}{2}, \ldots . .$. is:

$15 \frac{1}{2}$

$14 \frac{1}{2}$

$27 \frac{1}{2}$

2837

14. $12^{\text {th }}$ term of the A.P.: $7,10,13,16, \ldots .$. is:

2846

15. The common difference of A.P.: $-5,-1,3,7, \ldots .$. is:

-4

-6

Real Numebrs Chapter 5 AP

1. Arithmetic Progression:
An arithmetic progression (AP) is a list of numbers in which each term is obtained by adding a fixed number $d$ to the preceding term, except the first term. The fixed number $d$ is called the common difference.

2.General Form of an AP:
The general form of an AP is $a, a+d, a+2 d, a+3 d, \ldots$

3.. A given list of numbers $a_{1}, a_{2}, a_{3}, \ldots$ is an AP if the differences $a_{2}-a_{1}, a_{3}-a_{2}$, $a_{4}-a_{3}, \ldots$, give the same value, i.e., if $a_{k+1}-a_{k}$ is the same for different values of $k$.

4. General Term of an AP
In an AP with first term $a$ and common difference $d$, the $n$th term (or the general term) is given by $a_{n}=a+(n-1) d$.

5. The sum of the first $n$ terms of an AP :
$$ \mathrm{S}=\frac{n}{2}[2 a+(n-1) d]
$$
6. If $l$ is the last term of the finite AP, say the $n$th term, then the sum of all terms of the AP is given by :
$$ \mathrm{S}=\frac{n}{2}(a+l)
$$