Number System MCQs

Find the sum of all positive multiples of 5 less than 100.

A number divided by 52 gives remainder 45. If the number divided by 13 , the remainder will be :

The greatest among following numbers is : $${\left( 3 \right)^{\frac{1}{3}}},$$ $${\left( 2 \right)^{\frac{1}{2}}}$$ , 1, $${\left( 6 \right)^{\frac{1}{6}}}$$

252 m of pant cloth and 141 m of shirt cloth are available in a cloth store. To stitch one pant and one shirt, $$2\frac{1}{2}$$ m and $$1\frac{3}{4}$$ m of cloth are needed respectively. Then the approximate number of pants and shirts that can be made out of it are :

In a farm there are cows and hens. If heads are counted there are 180, if legs are counted there are 420. The number of cows in the farm is :

$$\frac{1}{{20}}$$ $$ + $$ $$\frac{1}{{30}}$$ $$ + $$ $$\frac{1}{{42}}$$ $$ + $$ $$\frac{1}{{56}}$$ $$ + $$ $$\frac{1}{{72}}$$ $$ + $$ $$\frac{1}{{90}}$$ $$ + $$ $$\frac{1}{{110}}$$ $$ + $$ $$\frac{1}{{132}}$$ is equal to :

The greatest number among the following : $$0.7 + \sqrt {0.16} ,$$ $$1.02 - \frac{{0.6}}{{24}},$$ $$1.2 \times 0.83,$$ and $$\sqrt {1.44} $$

The least number that must be subtracted from 63520 to make the result a perfect square is -

If n is a whole number greater then 1, then n2 (n2 - 1) is always divisible by -