Mathematics Mcqs

If y = 3/4 and yz = 2:5, then siz is:

A. 3:10

B. 49

C. 5:12

D. None of these

Correct answer is: C. 5:12

Multiply y and z and simplify.

Which of the following is a surd?

A. √16

B. √16 + √25

C. √21

D. None of these

Correct answer is: C. √21

Surd = irrational root; √21 is irrational.

The sum of the ages of father and a son presently is 70 years. After 10 years, the son’s age is exactly half that of the father. What are their ages now?

A. 45 years, 25 years

B. 50 years, 20 years

C. 47 years, 23 years

D. None of these

Correct answer is: B. 50 years, 20 years

na

2.08 in % = ?

A. 208%

B. 20%

C. 20.80%

D. None of these

Correct answer is: A. 208%

2.08 × 100 = 208%

Rs 800, 25% off → Final price?

A. Rs 600

B. Rs 650

C. Rs 700

D. None of these

Correct answer is: A. Rs 600

800 - 25% = 800 - 200 = 600

Riya scored 72, improved by 15%. New score?

A. 80.2

B. 85

C. 82.8

D. None of these

Correct answer is: C. 82.8

72 + 15% of 72 = 72 + 10.8 = 82.8

Phone Rs 20,000 + 12% GST = ?

A. 20,240

B. 21,400

C. 22,400

D. None of these

Correct answer is: B. 21,400

20,000 + 2,400 = 22,400

If Akbar had $12 and spent $8.4, how much money is left?

A. $4.60

B. $2.60

C. $3.60

D. $5.60

Correct answer is: C. $3.60

How many tangents can be drawn to a circle?

A. One

B. Two

C. 360

D. Infinite

Correct answer is: D. Infinite

If point A is (4, -1) and point B is (3, 5), what is the square of the distance AB between them?

A. 15

B. 37

C. 121

D. 169

Correct answer is: B. 37