5
Question
The first four term of an AP whose first term is −2 and the common difference is −2 are
The first four term of an AP whose first term is −2 and the common difference is −2 are
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Solution
The correct option is A −2,0,2,4
Given. First term, a=−2 common difference, d=−2
Let T1.T2,T3 and T4 be the first, second and third terms of AP
We know that,
Tn=a+(n−1)d
⇒T2=−2
and T2=−2+d
=−2−2
=−4
and T3=−2+2d
=−2−4
=−6
=−2−6
=−8
So,-2,-4,-6,-8 are the required terms of AP
Given. First term, a=−2 common difference, d=−2
Let T1.T2,T3 and T4 be the first, second and third terms of AP
We know that,
Tn=a+(n−1)d
⇒T2=−2
and T2=−2+d
=−2−2
=−4
and T3=−2+2d
=−2−4
=−6
=−2−6
=−8
So,-2,-4,-6,-8 are the required terms of AP
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