Question

if the first term of an ap is 3 and common difference is 5 then is 10th term is​

Answer 1

Here, in the question :

• First term of an AP ( a ) = 3
• Common difference ( d ) = 5

We know that :

• aₙ = a + ( n - 1 ) d

Substituting the values and finding the 10th term :

• a₁₀ = 3 + ( 10 - 1 ) ( 5 )
• a₁₀ = 3 + ( 9 ) ( 5 )
• a₁₀ = 3 + 45
• a₁₀ = 48

★ Therefore, the 10th term of the AP is 48.

                                           

Know more :

Sum of first ‘n’ terms of an AP :

• Sₙ = n / 2 [ 2a + ( n - 1 ) d ]

Sum of first ‘n’ terms of an AP :

• Sₙ = n / 2 ( a + aₙ )