What is the unit digit in 2^30?

What is the value of c , If 8 is 4% of a, and 4 is 8% of b. c equals b/a.

What will be the cost of gardening 1 meter broad boundary around a rectangular plot having perimeter of 340 meters at th…

Functions f and g are defined by:f(x) = 1/x + 3x and g(x) = -1/x + 6x - 4The domain  of (f+g)(x) is:

Find the product of `(8.77 xx 8.77xx 8.77+ 4.23xx 4.23 xx 4.23)/(8.77 xx 8.77 -8.77 xx 4.23+ 4.23 xx 4.23)` &n…

A sum of money placed at compound interest doubles itself in 4 years. In how many years will it amount to 8 times?

Find the remainder when 6799 is divided by 7.

Sum of present ages of A, B and C is 92 years. If 4 years ago, the ratio of their ages were 1:2:3 respectively, find A’s…