Q81
Find the missing number?
Find the missing number?


A.
81
B.
90
AnswerC.
87
D.
103
Answer: Option B
Solution
Answer: Option B
Solution:
Moving left to right, the numbers represent multiples of 12, subtracting 1, for the first step, adding 2 for the second, subtracting 3 for the third, adding 4 for the next etc. etc. So, 12 * 7 + 6 = 90.