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MATHS TRUE / FALSE

Ratio and Proportion · ICSE STD 7 (ICSE - English Medium). 5 questions.

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TRUE / FALSE

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5 questions · timed · auto-graded

Question 11 Mark
The ratio 3 : 2 and 4 : 5 are equivalent.
Answer
The ratio $3: 2$ and $4: 5$ are equivalent. (False)
Correct :
$\frac{3}{2} \neq \frac{4}{5} \text { as } 15 \neq 8$
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Question 21 Mark
If the numbers 3, 5, 12 and x are in proportion then the value of x is 20.
Answer
If the numbers 3, 5, 12 and x are in proportion
then the value of x is 20. (True)
3, 5, 12 and x are in proportion then
x × 3 = 5 × 12
x = 20
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Question 31 Mark
The ratio $5 : 7$ is greater than the ratio $5 : 6.$
Answer
The ratio $5: 7$ is greater than the ratio $5: 6. ($False$)$
Correct: $\frac{5}{7}, \frac{5}{6}$
$\frac{30: 35}{42}$
$30<35$
$5: 7$ is not greater than the ratio $5: 6$
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Question 41 Mark
Ratio of half an hour to 20 seconds is 30 : 20.
Answer
Ratio of half an hour to 20 seconds is 30 : 20. (False)
Correct :
= 30 × 60 : 20 = 1800 : 20 = 90 : 1
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Question 51 Mark
A ratio is always greater than 1.
Answer
A ratio is always greater than 1. (False)
Correct : Ratio can be less than 1 or equal to 1.
It is not necessary that it is greater than 1.
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