Multiplication of numbers with a series of 9’s

Multiplication of rational number

Find the multiplication of numbers 3.28 and 9.3

Consider the set S={1,-1} of square roots of unity and multiplication (x) as a binary operation on S .Construct the composition table for multiplication (xx) on S Also,find the identity element for multiplication on S and the inverses of various elements.

Name the property of multiplication of rational number illustrated by the statement: (-17)/(5)x9=9x(-17)/(5)

Name the property of multiplication of rational number illustrated by the statement: (-5)/(9)x((4)/(15)x(-9)/(8))=((-5)/(9)x(4)/(15))x(-9)/(8)

The number of three digit numbers which are multiples of 9 are (a) 10098quad (d)101

Multiplication of a decimal by a whole number

Find the sum of first seven numbers which are multiples of 2 as well as of 9.

Important Multiple and Addition Trigonometric Series

.Multiplicative inverse of (4)/(9) is