The value of $${3.157×4126×3.198\over63.972×2835.121}$$ is closest to : 

$$ \sqrt{749}×0.56+14.38=?$$

The sum of three numbers is 252. If the first number is thrice the second and third number is two-third of the first, then the second number is

In a school $${1\over10} $$ of the boys are same in number as $${1\over4}$$ of the girls and  $${5\over8} $$ of the girls are same in number as $${1\over4}$$   of the boys. The ratio of the boys to girls in that school is: 

Let x be the least number of 4 digit that when divided by 2, 3, 4, 5, 6 and 7 leaves a remainder of 1 in each case. If x lies between 2000 and 2500, then what is the sum of the digits of x?

(0.5 ×5 + 0.25 ×0.5 + 0.5 × 4 + 0.5 ×0.75) is equal to-

The product of two consecutive odd numbers is 399. Find the lower of them.

Direction : What value should come in place question mark(?) in the following questions?

$$2\over7$$ of $$ 5\over6$$ of ?=200