# CBSE Board 2020

## Mathematics

### Question Paper Solution

#### Section A

##### 1 Mark Questions

Question 1: The point P on x-axis are equidistant from the points A(-1,0) and B(5,0) is

1. (2, 0)
2. (0, 2)
3. (3, 0)
4. (2, 2)

Question 2: The coordinates of the point which is reflection of point (-3, 5) in x-axis are

1. (3, 5)
2. (3, -5)
3. (-3, -5)
4. (-3, 5)

Question 3: If the point P (6, 2) divides the line segment joining A (6, 5) and B (4, y) in the ratio 3 : 1, then the value of y is

1. 4
2. 3
3. 2
4. 1

Question 4: The sum of exponents of prime factors in the prim-factorisation of 196 is

1. 3
2. 4
3. 5
4. 2

Question 5: Euclid’s division Lemma states that for two positive integers a and b, there exists unique integer q and r satisfying a=bq+r and

1. 0 < r < b
2. 0 < r ≤ b
3. 0 ≤ r < b
4. 0 ≤ r ≤ b

Answer: (c) 0 ≤ r < b

Question 6: The zeroes of the polynomial x^2-3x-m(m+3) are

1. m, m + 3
2. –m, m + 3
3. m, -(m + 3)
4. –m, -(m + 3)

Answer: (b) –m, m + 3

Question 7: The value of k for which the system of linear equations x+2y=3, 5x+ky+7=0 is inconsistent is

1. -(14)/3
2. 2/5
3. 5
4. 10

Question 8: The roots of the quadratic equation x^2-0.04=0 are

1. ± 0.2
2. ± 0.02
3. 0.4
4. 2

Question 9: The common difference of the AP 1/p, (1-p)/p, (1-2p)/p, ….. is

1. 1
2. 1/p
3. -1
4. -1/p