Question
Write the correct number in the given boxes from the following A. P.
3, 6, 9, 12, . . .
$\text { Here } t _1=\square, t _2=\square, t _3=\square, t _4=\square, $
$ t _2- t _1=\square, t _3- t _2=\square$
$\therefore d =\square$
3, 6, 9, 12, . . .
$\text { Here } t _1=\square, t _2=\square, t _3=\square, t _4=\square, $
$ t _2- t _1=\square, t _3- t _2=\square$
$\therefore d =\square$



