Select the option in which the numbers are related in the same way as are the numbers of the following set.

{9, 21, 16}

{36, 42, 64}

{9, 21, 16}

The  logic followed here is :

SQUARE ROOT OF IST NUMBER AND SQUARE ROOT OF IIIRD NUMBER WE GOT BOTH THE VALUE AND ADD IT AND MULTIPLY WITH 3 TO GET THE SECOND NUMBER

AS

{9, 21, 16}

SQUARE  ROOT OF 9  = 3

SQUARE  ROOT OF 16  = 4

( 4 + 3 ) × 3

= 7 × 3

= 21

SIMILARLY IN OPTION 1

{36, 42, 64}

SQUARE  ROOT OF 36 = 6

SQUARE  ROOT OF 64  = 8

( 6 + 8 ) × 3

= 14 × 3

= 42