CBSE Class 10 Answered
Determine the AP whose fifth term is 19 and the difference of eighth term from the thirteenth term is 20.
Asked by arindeep.singh | 26 Jun, 2020, 03:49: PM
Expert Answer
Determine the AP whose fifth term is 19 and the difference of eighth term from the thirteenth term is 20.
a5 = 19
a + 4d = 19 ............. (i)
Also, a13 - a8 = 20
a + 12d - a - 7d = 20
5d = 20 => d = 4 ............ (ii)
From (i) and (ii), you will get the results of 'a' and then can form the AP.
Answered by | 26 Jun, 2020, 04:17: PM
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