CBSE MATHEMATICS TERM-1

1. The total number of factors of a prime number is

• 1

• 0

• 2

• 3

Tags

CCSS.4.OA.B.4

The HCF and LCM of 12, 21, 15 respectively are

• 3, 140

• 12, 420

• 3, 420

• 420, 3

The prime factorization of 3825 is:

• 3 x 5² x 21

• 3² x 5² x 17

• 3² x 5² x 35

• 3² x 17 x 19

The zeroes of the polynomial x² ─ 3x ─m(m+3) are

• m, m + 3 C. D.

• ─ m, m + 3

• m, ─ (m + 3)

• ─ m, ─ (m + 3)

If one of the zeroes of the quadratic polynomial x² + 3x + k is 2, then the value of k is:

• $-$ 7

• $-$ 2

• 10

• $-$ 10

The quadratic polynomial, the sum whose zeroes is ─ 5 and their product is 6, is

• x² + 5x + 6

• x² ─ 5x + 6

• x² ─ 5x ─ 6

• ─ x² + 5x + 6

Tags

CCSS.HSA.APR.B.3

The zeroes of the quadratic polynomial x² + kx + k, where

k ≠ 0,

• cannot both be positive

• cannot both be negative

• are always unequal

• are always equal

Assertion(A): 2 x² + 14x + 20 have two zeroes.

Reason(R): A quadratic polynomial can have at most two zeroes.

• Both (A) and (R) are correct, but (R) is not the correct explanation of (A).

• Both (A) and (R) are correct and (R) is the correct explanation of (A).

• Both (A) and (R) are incorrect.

• (A) is correct, but (R) is incorrect.

The value of k for which the system of equations x + y _ 4 = 0 and 2x + ky = 3, has no solution, is:

• $-$ 2

• $\ne$ 2

• 3

• 2

Tags

CCSS.8.EE.C.8B

The pair of equations x = 0 and x = ─ 4 has

• a unique solution

• no solution

• infinitely many solutions

• only solution (0, 0)

Tags

CCSS.8.EE.C.8B