Is 144 term of the ap 3,7,11...... Justify your answer.
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144 is not the term in an given AP. see pic for solution.
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a=3
d=7-3=4
l=144
l=a+(n-1)d
=3+(n-1)4
144=3+(n-1)4
141=(n-1)4
141/4=n-1
35.25=n-1
n should be a real number and it should not be in fraction therefore 144 is not the term of this AP
d=7-3=4
l=144
l=a+(n-1)d
=3+(n-1)4
144=3+(n-1)4
141=(n-1)4
141/4=n-1
35.25=n-1
n should be a real number and it should not be in fraction therefore 144 is not the term of this AP
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