4, 8, 20. 19, 2, ?. 7, 20, 113
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in this problem makes group of
3 - 3 number
as like below
4 , 8 , 20
19 , 2 , X
7 , 20 , 113
the logic is
third term = ( first term × second term ) - ( first term + second term )
hence answer is
19 , 2 , X is
( 19 × 2 ) - ( 19 + 2 )
= 38 - 21
= 17
3 - 3 number
as like below
4 , 8 , 20
19 , 2 , X
7 , 20 , 113
the logic is
third term = ( first term × second term ) - ( first term + second term )
hence answer is
19 , 2 , X is
( 19 × 2 ) - ( 19 + 2 )
= 38 - 21
= 17
Rooneo:
thanks
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