How many terms are there in the series 72+70+68+....+40?
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Common difference (d) is -2
First term (a) is 72
last term (l) is 40
The series is an arithmetic series.
Number of terms = (l-a)/d.+1
=17.
Have a look at the picture.
First term (a) is 72
last term (l) is 40
The series is an arithmetic series.
Number of terms = (l-a)/d.+1
=17.
Have a look at the picture.
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