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## Mathematics

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10th

grade

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15 questions

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- 1. Multiple Choice1 minute1 pt
The next term of an AP $\sqrt{7}$ , $\sqrt{28}$ , $\sqrt{63}$ ,......is

$\sqrt{70}$

$\sqrt{84}$

$\sqrt{98}$

$\sqrt{112}$

- 2. Multiple Choice1 minute1 pt
If the nth term of an AP is (2n+1) then the sum of its first three terms is

6n+3

15

12

21

- 3. Multiple Choice1 minute1 pt
If 4, x

_{1},x_{2},x_{3},28 are in AP then x_{3}is ______19

23

22

cannot be determined.

- 4. Multiple Choice1 minute1 pt
The sum of first 'n' terms of an AP is (3n

^{2}+6n). The common difference of the AP is ______6

9

15

-3

- 5. Multiple Choice1 minute1 pt
The 5

^{th}term of an AP is -3 and its common difference is -4. The sum of its first 10 terms is_________50

-50

30

-30

- 6. Multiple Choice1 minute1 pt
The 13

^{th}term of an AP is 4 times its 3^{rd}term. If its 5^{th}term is 16 then the sum of its first ten terms is _______150

175

160

135

- 7. Multiple Choice1 minute1 pt
The common difference of the AP $\frac{1}{p}$ , $\frac{1-p}{p}$ , $\frac{1-2p}{p}$ ........is

p

-p

-1

1

- 8. Multiple Choice1 minute1 pt
Which term of an AP 72, 63, 54, ...... is 0 ?

8

^{th}9

^{th}10

^{th}11

^{th} - 9. Multiple Choice1 minute1 pt
The sum of first

*n*odd natural numbers is _____2n-1

2n+1

n

^{2}n

^{2}- 1 - 10. Multiple Choice1 minute1 pt
The first and last terms of an AP are 1 and 11. If the sum of its terms is 36, then the number of terms will be _______

5

6

7

8

- 11. Multiple Choice1 minute1 pt
Formula to find sum of n terms in an AP is ________

sn = a+ (n - 1)d

$s_n$ = $\frac{n}{2}$ (a +(n-1)d)

$s_n$ = $\frac{n}{2}$ (2a +(n-1)d)

$s_n$ = $\frac{n}{2}$ (2a +(n+1)d)

- 12. Multiple Choice1 minute1 pt
The sum of first 20 odd natural numbers is

100

210

400

420

- 13. Multiple Choice1 minute1 pt
What is the common difference of an AP in which a

_{18}- a_{14}= 32?8

-8

4

-4

- 14. Multiple Choice1 minute1 pt
The 8th term of an AP is 17 and 14th term of an AP is 29. The common difference of the AP is _______

3

2

5

-2

- 15. Multiple Choice1 minute1 pt
Which term of the AP 21, 42, 63, 84, . . . . is 210?

9th

10th

11th

12th

- Answer choicesTagsAnswer choicesTags
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