6,11,16,21,26........... write algebraic expression for nth number in pattern
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Given : algebraic form of 6, 11, 16, 21
To Find : algebraic form
Solution:
6, 11, 16, 21
a = first term
d = common difference
a = 6 , d = 5
a + ( n- 1)d
= 6 + (n - 1) 5
= 6 + 5n - 5
= 5n + 1
5n + 1 is algebraic expression of the pattern
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