Mathematics-Rational Numbers (NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension): Questions 11 - 13 of 13

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Question number: 11

» Mathematics » Rational Numbers

MCQ▾

Question

A merchant advertises 10 % off on the items bought from his store. The total discount got by a customer who bought a suitcase worth Rs. 560, a bag worth Rs. 90 and a towel worth Rs. 45 is

Choices

Choice (4) Response
a.

Rs. 71.50

b.

Rs. 69.50

c.

Rs. 70

d. All of the above

Question number: 12

» Mathematics » Rational Numbers

MCQ▾

Question

ABC is a triangle and AD is perpendicular to BC. It is given that the length of AB, BC and CA are all rational numbers. Which of the following is correct?

Choices

Choice (4) Response
a.

AD and BD must be rational

b.

BD must be rational but AD need not be rational

c.

AD must be rational but BD need not be rational

d.

Neither AD nor BD need be rational

Question number: 13

» Mathematics » Rational Numbers

MCQ▾

Question

Which of the following is rational?

Choices

Choice (4) Response
a.

Radius of a circle with circumference 1π

b.

Circumference of a circle with radius 1π

c.

Radius of a circle with area 1π

d.

Area of a circle with radius 1π

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