Correct option is C
the given number series:
57, 62, 72, 77, 87, ?
Identify the pattern
Find the difference between consecutive terms:
62 - 57 = 5
72 - 62 = 10
77 - 72 = 5
87 - 77 = 10
Logic = The pattern alternates between +5 and +10.
Apply the pattern to find the missing number
87 + 5 = 92
Final Answer:
92
Correct Option:
C) 92
Alternate solution
57 62 72 77 87 ?
+5, +10, +5, +10, +5
? = 87 + 5 = 92
hence option c is correct.