Question

Find the 6th term of the AP ,5,10,15,20..............

Answer 1

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A.P : 5, 10, 15, 20......

=> a = 5

=> d = 10 - 5 = 5
=> = 15 - 10 = 5

So,

=> 6th term = a + 5d

=> T6 = 5 + 5 x 5

=> T6 = 5 + 25

=> T6 = 30 <=== ans

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Answer 2

first term of AP =5
common ratio of AP =5
therefore ; 6 term of AP =a+(n-1)d
=5+(6-1)5
=5+5×5
=5+25
=30 is your answer