alleryਕਿੰਨੀਆਂ ਅਭਾਜ ਸੰਖਿਆਵਾਂ 20 ਤੋਂ ਛੋਟੀਆਂ ਹਨ?
A8
B6
C9
D7
Answer & Solution
Correct answer: A. 8
20 ਤੋਂ ਹੇਠਾਂ ਦੇ ਪ੍ਰਮੁੱਖ ਅੰਕ 2, 3, 5, 7, 11, 13, 17 ਅਤੇ 19 ਹਨ, ਜੋ ਅੱਠ ਬਣਾਉਂਦੇ ਹਨ।
Keep practising Number System
Browse all Number System questions for RRB NTPC, or explore more Quantitative Aptitude topics.
Related questions
For rational numbers a/b and c/d with strictly positive denominators, a/b < c/d holds precThe fundamental theorem of arithmetic guarantees that prime factorization of an integer isIf the 7-digit number 5432y71 is divisible by 9, what is the single-digit value of y?Under the ancient rules formulated by Brahmagupta, subtracting zero from a fortune resultsWhich celebrated 6-digit recurring sequence forms the cyclic repeating block in decimal 1/In number theory, what specific technical name is given to the property of being a prime nWhen does long division of a rational fraction terminate?How many rational numbers lie between any two rational points?