Select the option that is related to the sixth number in the same way as the first number is related to the second number and the third number is related to the fourth number.
1503 : 3004 :: 871 : 1740 :: ? : 142
Answer & explanation
Correct answer: option 3
Pattern followed is :
2nd term =( 1st term ) × 2 - 2
1503 : 3004
2nd term =( 1503 ) × 2 - 2= 3006 - 2 = 3004
& 871 : 1740
2nd term =( 871 ) × 2 - 2= 1742 - 2 = 1740
Similarly ,
? : 142
2nd term =( 1st term ) × 2 - 2
`142 = ( 1st term ) × 2 - 2
( 1st term ) × 2 = 144
1st term = 72
72 is correct answer .