If difference of cube and square of a number is 100 and difference of square and number is 20, then value of number is 

What least value must be assigned to ‘*’ so that the number 63576 * 2 is divisible by 8?

A six digit number is formed by writing a three digit number two times consecutively. Find the least four digit number which can exactly divide this type of six digit number.

N is the smallest three digit prime number. When N is divided by 13, then what will be the remainder? 

0.1 and   $${5\over 8}$$ of a bamboo are in mud and water respectively and the rest of length 2.75 m is above water. What is the length of the bamboo? 

A student multiplies a number with 7.2 instead of 0.72. If due to this answer is 2592 more than the right answer, then what was the original number? 

The total cost of 18 pens and 23 pencils is Rs. 231, while the total cost of 7 pens and 13 pencils is Rs. 102. What is the cost of 4 pens and 9 pencils?

The fourth root of 24010000 is