1) 18% of 45 + 5% of 28
What is the unit digit of the product 21 × 22 × 23 × 24 × ... × 29?
By which numbers is 7^6n - 6^6n, where n is an integer >0, divisible?
Find a positive number which when increased by 17 is equal to 60 times the reciprocal of the number.
The sequence 2, 1, (1/2), (1/4), ... is an example of a:
Find the Compound Interest (C.I.) on Rs. 5,000 at 4% p.a. compounded half-yearly for 1 1/2 years.
A circular wire of radius 21 cm is bent to form a rectangle. The sides of the rectangle are in the ratio 8:3. Find the area of the rectangle in cm^2.
What is the market value of each share if a person buys Rs. 20 shares paying 9% dividend and the person wants to have an interest of 12% on their money?
Solve the following quadratic equations and determine the relationship between the values of x and y:
I. x2 + 3x - 18 = 0
II. y2 + y - 30 = 0