Question
The angle of depression of two ships from the
top of a light house are 45º and 30º. if the ships are 120m on the opposite sides of light house apart, find the height of the light house.Solution

Let N be the greatest number that will divide 85, 112, 139 leaving the same remainder in each case. Then sum of the digits in N is:
What should be the minimum number of chocolates so that when distributed among 3,4,5,6 and 7 children, 1,2,3,4 and 5 chocolates are left respectively?
If total number of factors of 1,260 is 'x', then find the value of (x - 4) (x + 6).
Let N be the greatest number that will divide 85, 116, 147 leaving the same remainder in each case. Then sum of the digits in N is:
Three numbers a, b and c are co-prime to each other such that ab = 34 and bc = 51. Find the value of (a + b + c).
What is the least number which when divided by 3, 15 & 18 leave a remainder 6 in each case & it is also divisible by 12?
Two numbers are in the ratio 4 : 5 and their least common multiple (LCM) is 1800. What are the two numbers?
The square of sum of two numbers is 36,864 and the sum of squares of the same two numbers is 21,024. If their H.C.F. is 12, then find their L.C.M.Â
The ratio of two numbers is 9:12 and their LCM is 324. The numbers are:
HCF of two numbers 65 and 104 can be expressed in the form of (40m – 107) whereas LCM of these two numbers can be expressed in the form of (60n – 20...