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Information and Communication Technology MCQ - Number System

41 The remainder, when 2851 x(2862)² x (2873)³ is divided
by 23 is

When the numbers 2851, 2862 and 2873 are divided by 23, the remainders are 22, 10 and 21 respectively. Required remainder,

[when 100, 9261 are.divisible by 23 remainders are 8, 15]

42 If x = 2/3 and y =3/4, then a rational number (x - y)^-l + (x^-1_ y^-1) is equal to

Given, X =2/3. and y =3/4

43 the value of

Taking approximate values, we have

44 If 3/4 of the difference of 21/4 and 1 2/3 is subtracted from 2/3 of 3 1/4 the result is

According to the question

45 The value of fraction, shown in the given figure, is

Value of the fraction = 3/9 = 1/3

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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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