Question

find 10th term of the AP: 1,4,7,10.....​

Answer 1

Step-by-step explanation:

AP=1,4,7,10......

a1=a=1

a2=a+d=1+d=4

d=4-1=3

a10=a+(10-1)d=a+9d=1+9*3=1+27=28 Ans

Answer 2

Answer:

The 10th term is 28

Step-by-step explanation:

10th term of the A.P. 1, 4, 7, 10, ….. Arithmetic Progression (AP) whose common difference is = an – an-1 where n > 0

Lets consider as, a = a1 = 1, a2 = 4 …

Therefore, common difference, d = a2 – a1 = 4 – 1 = 3

To find the 10th term of A.P, firstly find an

By using the formula,

an = a + (n - 1) d

= 1 + (n - 1) 3

= 1 + 3n – 3

= 3n – 2

When n = 10:

a10 = 3(10) – 2

= 30 – 2

= 28

Thus, 10th term is 28.

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