Maths / Playing With Numbers / Factors

QUESTION
 

Identify the set of numbers between 10 and 20 which have exactly two factors

 

OPTIONS
A. 

12 , 14, 15,16 , 18

B. 

11, 12 ,13 , 14, 15, 16, 18

C. 

11, 13, 17, 18

D. 

11, 13, 17, 19

Right Option : D

EXPLANATION
Explain TypeExplanation Content
Text

the prime number have exactly two factors, And the set of numbers 11, 13, 17, 19 are prime numbers.

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