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Which term of the AP : 3,15,27,39,... will be 132 more than its 54th term?

Posted by Vaishali ;) ?? Yadav 5 years, 1 month ago

CBSE > Class 10 > Mathematics

3 answers

Paritosh Suman 5 years, 1 month ago

65th term

0Thank You

Hunter Allies 5 years, 1 month ago

1Thank You

A K47 5 years, 1 month ago

a = 3, d = 12 first find 54th term so n = 54 . By formula An = a +(n - 1) d so An = 3+(54-1)12 = 639. To find the term from question, 639+132= 771. By using same formula, 771=3+(n-1)12 we get n = 65.

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