Paper 1 · Mathematical Reasoning and Aptitude
Find the missing number in the following series: 10, 24, 52, ?, 220
A104
B98
C112
D108 ✓ Correct
Correct answer: (D) 108 — The missing number is 108, so that is the answer.
Explanation
★The missing number is 108, so that is the answer.
★Each term is twice the previous term plus 4.
★10 times 2 plus 4 is 24, and 24 times 2 plus 4 is 52.
★So the next term is 52 times 2 plus 4.
★52 times 2 is 104, and adding 4 gives 108.
★This fits, since 108 times 2 plus 4 gives the next term 220.
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