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The first term and the common difference for the are respectively
If p, q, r are in AP, then p^{3} + r^{3}  8q^{3} is equal to
∵ p, q, r are in AP.
∴ 2 q = p + r
⇒ p + r  2 q = 0
The given AP is √8, √18, √32,......... On simplifying the terms, we get:
In an AP, if a = 3.5, d = 0, n = 101, then a_{n} will be
a_{101} = 3.5 + 0 (100) = 3.5
The famous mathematician associated with finding the sum of the first 100 natural numbers is
Johann Friedrich Gauss, he was a German mathematician who find the sum of the first 100 natural number.
The list of numbers 10, 6, 2, 2, ... is
The 6th term from the end of the AP: 5, 2, 1 , 4 , . . . , 31 is
Two APs have the same common difference. The first term of one of these is 1 and that of the other is 8. Then the difference between their 4th terms is
a_{4}  b_{4} = (a_{1} + 3d)  (b_{1} + 3d)
= a_{1} b_{1} =  1  (8) = 7
Which term of the AP : 21, 42, 63, 84, ... is 210 ?
If the nth term of an AP is (2n + 1), then the sum of its first three terms is
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