Paper 1 · Mathematical Reasoning and Aptitude
Find the missing number in the following series: 2, 7, 17, 32, 52, 77, ?
A107 ✓ Correct
B91
C101
D92
Correct answer: (A) 107 — The missing number is 107, so that is the answer.
Explanation
★The missing number is 107, so that is the answer.
★Find the differences between the consecutive terms.
★The differences are 5, 10, 15, 20 and 25.
★Each difference grows by 5, so the next difference is 30.
★So the missing term is 77 plus 30.
★This gives 107.
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