MULTIPLICATION PART 1

Match the items in column 1 with the items in column 2.Column 1 Column 2(i) 35 (a) Multiple of 8(ii) 15 (b) Multiple of 7(iii) 16 (c) Multiple of 70(iv) 20 (d) Factor of 30 (v) 25 (e) Factor of 50 (f) Factor of 20

Show that -a is not the inverse of a in N for the addition operation + on N and 1/a is not the inverse of a in N for multiplication operation xx on N, for a!=1 .

Uses of Multiple Reflection of Sound

Complete the following Multiplication Table :

Two dice are thrown simultaneously: Find the probability of its occurrence is 1. An even number as the sum The sum as a prime number A total of at least 10 A doublet of even number A multiple of 2 on one dice and a multiple of 3 on the other dice. Same number on both dice A multiple of 3 as the sum

The given diagram is an outline of human body showing the posttion of certain organs. In this diagram (I) Name the parts labelled 1-5. (ii) Name the hormone released from 1 that influences the working of part 2. (iil) How do part labelled as 3 differs from parts labelled as 1 and 2 in general? Name the endocrine cells present in part 3. (iv) What will happen if the part labelled as 4 is removed ? (11) Name the hormones released by part 5. (VI) Why the part labelled as 1 called master gland? Which part of the forebrain controls the gland labelled 1 ? (vii) Name the gland that secretes 'emergency hormone.

Let A = {x : x is a multiple of 3} and B = {x : x is a multiple of 5), then A nn B is given by

Use matrix multiplication to divide Rs. 30,000 in two parts such that the total annual interest at 9% on the first part and 11% on the second part amounts Rs. 3060

Consider the set S={1,\ -1} of square roots of unity and multiplication (xx) 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.

Suppose an integer from 1 through 1000 is chosen at random, find the probability that the integer is a multiple of 2 or a multiple of 9.