Which of the following is a prime number ?
A. 19
B. 20
C. 21
D. 22
Answer: Option A
Solution(By Examveda Team)
Clearly, 19 is a prime number.Related Questions on Number System
Three numbers are in ratio 1 : 2 : 3 and HCF is 12. The numbers are:
A. 12, 24, 36
B. 11, 22, 33
C. 12, 24, 32
D. 5, 10, 15
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