ABC is triangle such that its perimeter is l. Letm and n be positive integers such that l = am = bn where a, b and c have their usual meanings(sides of the triangle ). How many such triangles are isosceles?

0

1

2

3

none of these

Correct Answer : B

A number exceeds its four seventh by 18. What is the number

If m and n (n > 1) are whole numbers, such that mn = 121, the value of (m – 1)n + 1 is

Five sixth of a number is more than 30% of another number by 25. What is the ratio of the first number to the second number