Find the second diagonal of a rhombus when it’s first diagonal length is 12 cm and its side is 10 cm?

A square and an equilateral triangle are of the same perimeter. If the diagonal of the square is $$ {12\sqrt{2}}$$ cm long, then the area of the triangle is.

A single discount equivalent to two successive discounts of $$ {12{1\over 2}}{\%}$$ and 20% is

The difference between the compound interest and simple interest of a certain sum of amount is rupees 256.40 for 4 years at 10% rate per annum. Find the sum of money?

The average of 100 numbers is 44. The average of these 100 numbers and 4 other new numbers is 50. The average of the four new numbers will be

What will be come in place of question mark(?) in the following number series?
8,  14, 25, 46, 82 , ?

The mean of 20 items is 55. If two items 45 and 30 are removed, what will be the new mean of the remaining items?

A sum of ₹14,375, when invested at r% interest per year compounded annually, amounts to ₹16,767 after two years. What is the value of r?