In an AP, if a = 3.5, d = 0

Question:

In an AP, if a = 3.5, d = 0 and n = 101, then an will be

(a) 0                            

(b) 3.5                    

(c) 103.5                      

(d) 104.5

Solution:

(b) For an AP an = a + (n – 1)d= 3.5+ (101 – 1 )x 0                        [by given conditions]

∴                            = 3.5

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