CBSE 10TH MATHEMATICS

The value of x, for which the polynomials (x - 1) and x2 - 2x +1 vanish simultaneously, is

• 2

• ─ 2

• 1

• ─ 1

The value of the polynomial x⁸ ─ x⁵ + x² ─ x +1 is

• Positive for all the real numbers

• Negative for all the real numbers

• 0

• depends on the value of x

Lowest value of x² + 4x + 2 is

• 0

• ─ 2

• 2

• 4

If one zero of the quadratic polynomial x² + 5x + 6 is ─3, then find the other zero

• 3

• 2

• ─ 2

• None of these

When a number is divided by 7, its remainder is always

• Greater than 7

• Equal to 7

• Less than 7

• At least 7

If HCF (16, y) = 8 and LCM (16, y) = 48, then the value of y is

• 8

• 16

• 24

• 48

If two positive integers a and b are written as a = p³q² and b = pq³; p, q are prime numbers. Then HCF (a, b) is

• pq

• p²q²

• p³q³

• pq²

If two positive integers a and b are written as a = p³q² and b = pq³; p, q are prime numbers. Then HCF (a, b) is

• pq

• p²q²

• p³q³

• pq²

If a non zero rational number is multiplied to an irrational number, we always get

• An irrational number

• A rational number

• 1

• 0

For some positive integer q, every even integer is of the form

• q

• q + 1

• 2q

• 2q + 1