Mathematics Quiz for Practice CBSE 10th

Q1. For some integer n, the odd integer is represented in the form of:

(a) n

(b) n + 1

(c) 2n + 1

(d) 2n

Answer: (c) 2n + 1

Q2. For any two positive integers a and b, HCF (a, b) × LCM (a, b) = 

(a) 1

(b) (a × b)/2

(c) a/b

(d) a × b

Answer: (d) a × b

Q3. If the zeroes of the quadratic polynomial ax²+bx+c, c≠0 are equal, then

(a) c and b have opposite signs

(b) c and a have opposite signs

(c) c and b have same signs

(d) c and a have same signs

Answer: (d) c and a have same signs

Q4. What is the solution of the system of equations 2x – y = 1 and x + y = 5?

A. x = 2, y = 3

B. x = 3, y = 2

C. x = 1, y = 4

D. x = 4, y = 1

Answer: A

Q5. What is the quadratic formula?

A. x = (-b ± √b² – 4ac) / 2a

B. x = (-b ± √b² + 4ac) / 2a

C. x = (-b ± 2a√b² – 4ac) / 2a

D. x = (-b ± 2a√b² + 4ac) / 2a

Answer: A

Q6. (Sin 30°+cos 60°)-(sin 60° + cos 30°) is equal to:

(a) 0

(b) 1+2√3

(c) 1-√3

(d) 1+√3

Answer: (c) 1-√3

Q7. A flag pole 18 m high casts a shadow 9.6 m long. Find the distance of the top of the pole from the far end of the shadow.