EXAMPLES XXIII 428 



But h? j {222(A? - 8p) - 



. _L {222 x 0-34 - 21 x 0-71 - 2 x 0-01 } 

 180 



- 0-3364 



dtp 0-3364 

 302 = ~~25~ 



= 0-01346 



EXAMPLES XXIII 



(1) Find the 8th term and the general term of the series 



20 30 42 56 72 ... 



(2) Find the 10th term and the general term of the series 



10 4 - 2 - 2 ... 



(3) Find the 9th term and the general term of the series 



18 9 6 15 42 ... 



(4) Find the 7th term and the general term of the series 



3 9 20 38 65 ... 



(5) Find the llth term and the general term of the series 



36 27 12 27 132 411 ... 



(6) Find the 6th term and the general term of the series 



32 38 44 56 80 ... 



(7) Working with the tabular values of p and 6 given in 

 paragraph 200, and denoting = 90 by u , find p when = 92. 

 Also denoting = 95 by u , find p when = 92. 



(8) Working with the tabular values of p and given in 

 paragraph 200 and denoting = 120 by u , find p when = 123. 

 Also denoting = 125 by U Q) find p when = 123. 



(9) The following values are taken from the table of cubes : 



6-1 6-2 6-3 6-4 6-5 6-6 6-7 



226-981 238-328 250-047 262-144 274-625 287-496 300-763 



Denoting (6-3) 3 as u , find the value of (6-36) 3 , also denoting (6-4) 3 

 as u , find the value of (6-36) 3 . 



