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Ans 1:
Class : Class 8
the answer is 144 , because
the series is 198,194,185,169,___
198-194=4=2*2
194-185=9=3*3
185-169=16=4*4
therefore, 169-___=25=5*5
___=169-25=144
hence the answer is 144
Ans 2:
Class : Class 9
Answer is option (D).
The pattern is - 4, - 9, - 16,.....i.e. - 2^2, - 3^2, - 4^2,.....
So, missing pattern = 169 - 5^2 = 169 - 25 = 144.
Ans 3:
Class : Class 9
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