allery1 आणि 20 दरम्यान किती मूळ संख्या आहेत?
A7
B8
C9
D6
Answer & Solution
Correct answer: B. 8
1 आणि 20 दरम्यानच्या मूळ संख्या 2, 3, 5, 7, 11, 13, 17 आणि 19 या आहेत. एकूण संख्या = 8.
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