The sum of all those terms, of the anithmetic progression $3,8,13, \ldots \ldots .373$, which are not divisible by $3$,is equal to $.......$.
$9524$
$9523$
$9522$
$9525$
If all interior angle of quadrilateral are in $AP$ . If common difference is $10^o$ , then find smallest angle ?.....$^o$
If $\frac{a}{b},\frac{b}{c},\frac{c}{a}$ are in $H.P.$, then
The sides of a right angled triangle are in arithmetic progression. If the triangle has area $24$ , then what is the length of its smallest side ?
If the sum of first $n$ terms of an $A.P.$ is $cn(n -1)$ , where $c \neq 0$ , then sum of the squares of these terms is
Insert five numbers between $8$ and $26$ such that resulting sequence is an $A.P.$