Find the first term of AP whose 6th and 11th term are 16 and 26 respectively ........

Quantitative Aptitude (CDS) Arithmetic progression

Find the first term of AP whose 6th and 11th term are 16 and 26 respectively ?

nth term of AP is = a+d(n-1)
16=a+d(6-1) ...equation1
26=a+d(11-1) ...equation2
solving 1 and 2
d=2
putting value of d=5 in equation1
a=6

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