Arithmetic Progression
4 Board Maths previous year questions on Arithmetic Progression — options free on every question; 1 include the answer & explanation free, the rest unlock with PYQ Pass.
If the first term of an arithmetic progression is 2
and the common difference is 3 , then the \({n}^{\text{th }}\) term will be :
\(3n-1\)
We know that formula for the \({n}^{th}\) term of an A.P.
\({a}_{n}=a+(n−1)d\)
Where:
a= first term
= common difference
Substitute the given values
\(a=2,\ d=3\)
\({a}_{n}=2+(n−1)⋅3\)
\({a}_{n}=2+3n−3\)
\({a}_{n}=3n−1\)
\({11}^{\text{th }}\) term of the A. P. : \(-3,-\frac{1}{2},2,\ldots .\). is :
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\({11}^{\text{th }}\) term of the A.P. \(-3,-\frac{1}{2},2,\ldots \ldots\) is
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If 18,a,b,−3 are in A.P., then the value of a+b will be:
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