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Information and Communication Technology MCQ - Number System

6 Which is the only even prime number?

2 is the only even prime number.

7 The first prime number is

2 is the first prime number.

8 A number is three times the another number. If sum of both the numbers is 20, then find them

Given, x= 3y and x + y = 20 ⇒ 4y = 20 ⇒Y = 5 ∴ x = 3y =3 x 5 = 15

9 Sum and difference of two numbers are 21 and 11, respectively. Find the greater number.

Given, x+ y = 21 and x-y = 11 ∴ x= 16 and y=5

10 944 - 307 + 119 is equal to

944 - 307 + 119= (944 + 119) -307 = 1063 - 307 = 756

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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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Information and Communication Technology MCQ - Number System

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