(ii) If a - sign precedes a symbol of grouping the grouping symbol may be removed and the sign of each term is changed.

(i) If a + sign precedes a symbol of grouping the grouping symbol may be removed without any change in the sign of the terms.

Write the names and symbols of the group 15(VA) elements.

Conditions: (i) If the first element is a symbol and the last element is a number, then the codes for both are to be interchanged. (ii) If both the first and last elements are symbols, then the last element is to be coded as the code for the first element. (iii) If the group of elements contains only one symbol, then that symbols is to be coded as A. 28%956

Conditions: (i) If the first element is a symbol and the last element is a number, then the codes for both are to be interchanged. (ii) If both the first and last elements are symbols, then the last element is to be coded as the code for the first element. (iii) If the group of elements contains only one symbol, then that symbols is to be coded as A. 462+74

Conditions: (i) If the first element is a symbol and the last element is a number, then the codes for both are to be interchanged. (ii) If both the first and last elements are symbols, then the last element is to be coded as the code for the first element. (iii) If the group of elements contains only one symbol, then that symbols is to be coded as A. +5963%

The first sign of growing foetus may be noticed by

The first sign of growing foetus may be noticed by