Paper 1 · Mathematical Reasoning and Aptitude
Find the missing number in the following series: 3, 10, 101, ?
A10101
B10201
C10202 ✓ Correct
D11012
Correct answer: (C) 10202 — The missing number is 10202, so that is the answer.
Explanation
★The missing number is 10202, so that is the answer.
★Each term is the square of the previous term plus 1.
★3 squared plus 1 is 10, and 10 squared plus 1 is 101.
★So the next term is 101 squared plus 1.
★101 squared is 10201, and adding 1 gives 10202.
★So the missing term is 10202.
Want more like this? Create a free account to practise a full test, track your progress, and get spaced-repetition review.
Shared by Mcqkart · via Mcqkart.in