Select the number-pair in which the two numbers are related in the same way as the two numbers in the following number-pair.
18 : 57 :: ?
Answer & explanation
Correct answer: option 4
Pattern followed is :
(1st term + 1 ) × 3 = 2nd term
18 : 57
(18 + 1 ) × 3 = 19 × 3 = 57
Similarly ,
By observing all options , We find that only (28 : 87) follow the pattern .
28 : 87
( 28 + 1 ) × 3 = 29 × 3 = = 87
28 : 87 , is correct answer .