allery2, ?, 12, 20, 30 എന്നിവയിൽ ഒരു എൻട്രി മറച്ചിരിക്കുന്നു. മറഞ്ഞിരിക്കുന്ന നമ്പർ എന്താണ്?
A6
B8
C4
D10
Answer & Solution
Correct answer: A. 6
nx (n + 1) എന്നതിനെ പിന്തുടരുന്ന പദങ്ങൾ: 1x2, 2x3, 3x4, 4x5, 5x6, അതിനാൽ രണ്ടാമത്തെ പദം 6 ആണ്.
Keep practising Number Series
Browse all Number Series questions for RRB NTPC, or explore more Reasoning topics.
Related questions
Squares of 3, 4, 5, 6 are 9, 16, 25, 36. What number is next?Odd gaps 3, 5, 7, 9 link 4, 7, 12, 19, 28. Which number comes next?Subtracting 1, 2, 3, 4 in turn from 20 gives 20, 19, 17, 14, 10. Next?Triangle dots run 1, 3, 6, 10, 15, 21, 28. How many are in the next?Spot the intruder among the numbers 1, 4, 9, 16, 20, 25.A prime is missing in the list 2, 3, 5, ?, 11, 13. Which one?What does the Fibonacci pattern give after the pair 8 and 13?Which square number is the sum of triangular numbers 6 and 10?