write three term of an AP whose first term a=10 and common difference d=5
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Given first term = a = 10 ,
common difference = d = 5 in A.P
second term = a2 = a + d
= 10 + 5 = 15,
Third term = a+ 2d
a3 = 10 + 2 × 5
= 10 + 10 = 10
nth term = a +(n-1)d
an = 10 + ( n - 1 )5
= 10 + 5n - 5
= 5n + 5
Therefore ,
Required A.P is ,
10 , 15, 20 , ..., 5n+5
10, 15, 20, 25,
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