allery1 और 20 के बीच कितनी अभाज्य संख्याएं हैं?
A7
B8
C9
D6
Answer & Solution
Correct answer: B. 8
1 और 20 के बीच की अभाज्य संख्याएं 2, 3, 5, 7, 11, 13, 17, और 19 हैं। इनकी कुल संख्या 8 है।
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