4/5 of a number is 10 more than two-thirds of the same number. What is that number?

The smallest number which when divided by 18, 24, 38 and 42 leaves the remainder 15, 21,     35 and 39 respectively is :-

The fourth root of 24010000 is 

$$ {109.07\sqrt{?}}-{61\over 21.02} ×?=47.96\sqrt{?}$$

Direction: What is the approximate value will come in place of the question mark(?) in the following questions?
5682 ÷ 63 × 36=? ×19

There are 11 members in a family out of which there are 4 males and remaining females. The family has hired three cars for a trip to zoo. The members are to be seated in the cars in such a way that there are not more than four members in one car and there is at least one male in each car. How many different ways can the members travel?

How many numbers are there from 500 to 650 (including both) which are neither divisible by 3 nor by 7?

The smallest number, which should be added to 756896 so as to obtain a multiple of 11, is :