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Information and Communication Technology MCQ - Number System

56 The value of 0.001 + 1.01 + 0.11 is

The value of 0.001 + 1.01 + 0.11 On adding, 0.001 1.010 0.110 _____ 1.121 _____

57 Write 94 in roman system.

58 If we multiply a fraction by itself and divide the product by its reciprocal, then the fraction obtained is 18 26/27. The original fraction is

Let the fraction be x

59 Find the value of 1³ + 2³ + 3³ + ... + upto 10thterms.

1³ + 2³ + 3³+ .... + 10³

"

60 Find the value of 9 + 10 + 11 + 12 + , .. + 2l.

9 + 10 + 11 + ... + 21 =(1+ 2+ ... + 21)-(1+ 2+ ... + 8)

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Question:

Afraction is equivalent to 5/8 Its denominator and numerator add upto 9L What is the difference between the denominator and numerator of this fraction?

A. 19
B. 21
C. 3
D. 13

Correct answer: B

Explanation:

Let the fraction be 5x/7y Now, sum of numerator and denominator = 91 i.e 5x + 8y = 91 => 13x = 91 => x = 7 ∴…

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