alleryStart learning →Which entry does not belong in 1, 3, 6, 10, 14, 15?
A6
B14
C15
D10
Answer & Solution
Correct answer: B. 14
1, 3, 6, 10, 15 are triangular numbers (gaps 2, 3, 4, 5), but 14 is not.
Keep practising Number Series, Coding and Decoding
Browse all Number Series, Coding and Decoding questions for CA Foundation, or explore more Quantitative Aptitude topics.
Related questions
The series 7, 14, 21, 28 is which type?In 0, 1, 1, 2, 3, 5, 8, how is each later term formed?What is the square root of 784?What is the smallest perfect square greater than 200?A triangle has 5 dots on each side in a triangular dot pattern. How many dots in all?Which of these numbers is prime?A natural number greater than 1 that is not prime is called what?How secure is a Caesar cipher in modern practice?