an important question from the book -ML aggarwal( avichal publication)class 10th , chapter9, arithmetic progression …….. This type of question has been asked in paper. so please solve it in detail. we have been asked
Clasa 10, ML Publication,
Check whether 55 is a term of the AP 7, 10, 13?
Arithmetic Progression Chapter 3 question no. 7(i)
Rajan@2021Guru
Check whether 55 is a term of the AP 7, 10, 13?
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Let an=a+(n−1)d=55
⇒7+(n−1)×3=55
⇒(n−1)×3=48
⇒n−1=16
⇒n=17
Clearly 55 is the 17th term of given AP