Mathematics-Linear Equations in One Variable [NSTSE (National Science Talent Search Exam- Unified Council) Class 8]: Questions 1 - 7 of 46

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Question 1

Linear Equations in One Variable
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Question

MCQ▾

If the angles of a triangle are in the ratio 1: 2: 3, then the difference between the greatest and smallest angles is:

Choices

Choice (4)Response
a.
b.
c.
d.

Question 2

Linear Equations in One Variable
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Question

MCQ▾

is true when value of x is:

Choices

Choice (4)Response
a.18
b.36
c.12
d.6

Question 3

Linear Equations in One Variable
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Question

MCQ▾

If the digit 1 is placed after a two digit number whose tens digit is ‘a’ and units digit is ‘b’, the new number is:

Choices

Choice (4)Response
a.
b.
c.
d.Question does not provide sufficient data or is vague

Question 4

Linear Equations in One Variable
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Question

MCQ▾

When 70 % of a number is added to 90 the result is the number again. The number is

Choices

Choice (4)Response
a.360
b.300
c.420
d.280

Question 5

Linear Equations in One Variable
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Question

MCQ▾

A fraction such that if the numerator is multiplied by 3 and the denominator is reduced by 3, we get , but if the numerator is increased by 8 and the denominator is doubled, we get . Then the fraction is:

Choices

Choice (4)Response
a.
b.
c.
d.

Question 6

Linear Equations in One Variable
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Question

MCQ▾

Sum of two numbers is 45 and their difference is 19. Then the numbers are:

Choices

Choice (4)Response
a.20,25
b.32,13
c.26,19
d.31,14

Question 7

Linear Equations in One Variable
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Question

MCQ▾

X and Y together can do a piece of work in 12 days, which X alone can do in 15 days. In how many days can T do the same work alone?

Choices

Choice (4)Response
a.60 days
b.35 days
c.45 days
d.30 days