CBSE X 2017 question paper: sample questions

Question 1

Express 3825 as a product of prime factors.

Accepted Answer

3²×5²×17

Answer

3×5²×17

Answer

3²×5×17

Answer

3²×5²×19

Question 2

For 5t²+12t+7, find the zeroes and their sum and product.

Accepted Answer

Zeroes −1,−7/5; sum −12/5; product 7/5

Answer

Zeroes 1,7/5; sum 12/5; product 7/5

Answer

Zeroes −1,−5/7; sum −12/7; product 5/7

Answer

Zeroes 1,−7/5; sum −2/5; product −7/5

Question 3

Which contradiction establishes that √5 is irrational when √5=p/q is assumed in lowest terms?

Accepted Answer

Both p and q become divisible by 5

Answer

p and q become consecutive integers

Answer

q becomes negative

Answer

5 becomes even

Question 4

Solve 2(2x−1)/(x+3)−3(x+3)/(2x−1)=5, x≠−3,1/2.

Accepted Answer

x=−10 or x=−1/5

Answer

x=10 or x=1/5

Answer

x=−10 or x=1/5

Answer

x=−3 or x=1/2

Question 5

Which monic quadratic has zeroes 3 and 2?

Accepted Answer

x²−5x+6

Answer

x²+5x+6

Answer

x²−5x−6

Answer

x²−6x+5

Question 6

For which k does 2x²−x+k=0 have equal roots?

Accepted Answer

1/8

Answer

1/4

Answer

1/2

Answer

−1/8

Question 7

Find the triangle vertices formed by 5x−y=5, 3x−y=3 and the y-axis.

Accepted Answer

(0,−5), (0,−3), (1,0)

Answer

(0,5), (0,3), (1,0)

Answer

(0,−5), (0,−3), (−1,0)

Answer

(0,−5), (0,3), (1,1)

Question 8

Which statement is Euclid’s division lemma for positive integers a,b?

Accepted Answer

There are unique integers q,r such that a=bq+r and 0≤r<b

Answer

a=bq+r with 0<r≤b

Answer

a=b+r with r>b

Answer

a=bq+r with r<0

Question 9

If Sₙ=5n²−3n, which AP and 10th term follow?

Accepted Answer

2,12,22,…; a₁₀=92

Answer

2,10,18,…; a₁₀=74

Answer

8,18,28,…; a₁₀=98

Answer

2,12,22,…; a₁₀=102

Question 10

200 logs are stacked with 20 in the bottom row, then 19,18,… . How many rows are used and how many logs are in the top row?

Accepted Answer

16 rows; 5 logs

Answer

25 rows; −4 logs

Answer

15 rows; 6 logs

Answer

20 rows; 1 log

Other CBSE X papers