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
The given series is 83, 54, X , -4, -33
Consecutive numbers decreases by 29
Following this pattern, the Missing Number X should decrease by 29 from the previous number
When we subract 29 to the number before X (i.e 54)
we get 54 - 29 = 25
The given series is 107, 134, 161, X , 215, 242
Consecutive numbers increases by 27
Following this pattern, the Missing Number X should increase by 27 from the previous number.
When we add 27 to the number before X
We get 161 + 27 = 188
The given series is 73, 92, 111, ? , 149, 168
Consecutive numbers increases by 19
Following this pattern, the Missing Number X should increase by 19 from the previous number.
When we add 19 to the number before X
We get 111 + 19 =130
899 , 960 , 1023 , 1088
First number is 30 x 30 - 1 = 899
Second number is 31 x 31 - 1 = 960
Third number is 32 x 32 - 1 = 1023
Fourth number is 33 x 33 - 1 = 1088
Next number has to 34 x 34 - 1 = 1155
The given series is 70, 61, X , 43, 34
Consecutive numbers decreases by 9
Following this pattern, the Missing Number X should decrease by 9 from the previous number
When we subract 9 to the number before X
We get 61 - 9 =52
The given series is : 138, 159, X , 201, 222
Consecutive numbers increases by 21 Following this pattern,
The Missing Number X should increase by 21 from the previous number.
When we add 21 to the number before X
(i.e 159) we get 159 + 21 = 180
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