Discussion

1) In the given series, can you find the missing number ?

89, 66, X , 20, -3

Explanation:

The given series is 89, 66, X , 20, -3
Consecutive numbers decreases by 23
Following this pattern, the Missing Number X should decrease by 23 from the previous number.
When we subract 23 to the number before X
We get 66 - 23 = 43

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