plz plz plz plz solve these questions
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I can solve Question no. 10
a=3
common difference(d )= a2-a1=8-3=5
the formula of find n term an = a+(n-1)d
now putting the value
78=3+(n-1)5
78-3=(n-1)5
75=(n-1)5
n-1=75/5
n-1=15
n=15+1
n=16
hence,n term of this AP is 16.
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