If the demand for the commodity taxed is elastic, the tax will tend to be shifted to the producer but in case of inelastic demand, it will be largely borne by the consumer. In case of elastic supply, the burden will tend to be on the purchaser and in the case of inelastic supply on the producer. Covered in videos and study notes; snapshot from study notes of the ixamBee SEBI course 
25 34 61 106 169 ?
...140 300 380 420 440 ?
...21 23 26 ? 39 51
...Three series are given below. You have to find the values of P, Q and R, then establish a relationship among them.
I: 840, P , 584, 456,...
14 15 34 116 460 2325
...18 19 28 53 102 ?
1 5 36 343 ? 59049
...Select the option in which the numbers are related in the same way as are the numbers of the following set.
(25, 18, 225)
To find the Next number in the given series.
0 6 24 60 120 ?
...13 24 75 134 447 892
...
