Solution: Numbers on the calculator pad = 0,1, 2, 3, 4, 5, 6, 7, 8, 9 Product of all these numbers = 0 × 1 × 2 × 3 × 4 × 5 × 6 × 7 × 8 × 9 = 0 {since the product of any number with 0 is also 0)

Q.12: The circumference of the circle is also sometimes called: Answer: Perimeter of a circle Q.13: 90 – 35 is equal to: Answer: 55 Q.14: 72 divided by 8 is equal to: Answer: 9 Q.15: How many sides does a decagon have?

Algebra problems With Solutions Example 1: Solve, (x-1)2 = [4√ (x-4)]2 Solution: x 2 -2x+1 = 16 (x-4) x 2 -2x+1 = 16x-64 x 2 -18x+65 = 0 (x-13) (x-5) = 0 Hence, x = 13 and x = 5.