Question

complete the following activity to find the 19 term of the A.P 10,15,20
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Answer 1

Step-by-step explanation:

Here a=10, d=□,t19=?

tn=a+□

∴t19=10+□

∴t19=□

Activity : Here , a=10,d=5,t19=?

tn=a+(n−1)d

∴t19=10+(19−1)×5

∴t19=100

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