Q. 1 A4.0( 3 Votes )

# Find:<

A.P is known for Arithmetic Progression whose common difference = an – an-1 where n > 0

a = a1 = 1, a2 = 4

Common difference, d = a2 – a1 = 4 – 1 = 3

To find the tenth term of A.P, firstly find an

We know, an = a + (n-1) d where a is first term or a1 and d is common difference

an = 1 + (n-1) 3

an = 1 + 3n – 3

an = 3n – 2

When n = 10:

a10 = 3(10) – 2

a10 = 30 – 2

a10 = 28

Hence, 10th term of A.P. is 28

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