Delhi University MCA Number Series Previous Year Questions (PYQs)
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Showing 3 questions
What is the next term in the series? 2, 7, 14, 23, 34, ______
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4
Solution
Given series: $2,\,7,\,14,\,23,\,34,\,\_\_$
Find the differences:
$7-2=5$, $14-7=7$, $23-14=9$, $34-23=11$
Difference pattern: $5,\,7,\,9,\,11$ (increases by 2 each time)
Next difference $= 11 + 2 = 13$
Next term $= 34 + 13 = 47$
Answer: $\boxed{47}$ ✅
What is the next term in the series 6, 20, 42, 72, 110, ... is
(a) 156
(b) 210
(c) 110
(d) 119
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Solution
Given series: $6,\,20,\,42,\,72,\,110,\,\_\_$
First differences: $14,\,22,\,30,\,38$
Second differences: $8,\,8,\,8$ (constant)
Next first difference $= 38 + 8 = 46$
Next term $= 110 + 46 = 156$
Answer: $\boxed{156}$ ✅
Find the odd man out:
1, 4, 27, 16, 125, 36, 216, 64, 729, 100
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Solution
The pattern of the series is 13, 22, 33, 42, 53, 62, 73. .....
Odd Term 216.
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