The sum of integers from $1$ to $100$ that are divisible by $2$ or $5$ is
$3000$
$3050$
$4050$
None of these
Maximum value of sum of arithmetic progression $50, 48, 46, 44 ........$ is :-
The value of $x$ satisfying ${\log _a}x + {\log _{\sqrt a }}x + {\log _{3\sqrt a }}x + .........{\log _{a\sqrt a }}x = \frac{{a + 1}}{2}$ will be
A man starts repaying a loan as first instalment of $Rs.$ $100 .$ If he increases the instalment by $Rs \,5$ every month, what amount he will pay in the $30^{\text {th }}$ instalment?
If ${S_k}$ denotes the sum of first $k$ terms of an arithmetic progression whose first term and common difference are $a$ and $d$ respectively, then ${S_{kn}}/{S_n}$ be independent of $n$ if
Write the first five terms of the sequences whose $n^{t h}$ term is $a_{n}=2^{n}$